bluuebunny/crossref_metadata_2025_split huggingface dataset:
Allometry of maximum vertical force production during hovering flight of neotropical orchid bees (Apidae: Euglossini)
Authors: Dillon Michael E. , Dudley Robert 
Published: December 2003

SUMMARYThe ability of orchid bees to generate vertical forces was evaluated using a load-lifting method that imposed asymptotically increasing loads during ascending flight, ultimately eliciting maximum forces while hovering. Among 11 orchid bee species varying by approximately an order of magnitude in body mass, the capacity to produce vertical forces expressed relative either to body weight or to flight muscle weight declined linearly with increased body mass. Allometric analysis of log-transformed data, by contrast, found maximum vertical force to scale isometrically with body mass, but also to exhibit a slightly negative allometry with respect to flight muscle mass. Maximum stroke amplitude at limiting loads averaged 140° and was remarkably constant among species, a result consistent with anatomical constraints of the hymenopteran thorax on wing motions. By contrast, wing-beat frequencies during maximum performance declined with increasing body mass. Repeated lifting by individual bees reduced performance only when the number of consecutive lifts exceeded 15. Variation in linear mass density of the lifted load did not systematically alter performance estimates, although measurements on one species in two consecutive years at different thermal environments yielded significant differences in estimates of maximum force production. These findings suggest an adverse scaling of vertical force production at greater body mass even if flight muscle mass scales isometrically.
Stimulation of the α-adrenoceptor triggers the venom production cycle in the venom gland of Bothrops jararaca
Authors: Kerchove Celine M. , Carneiro Sylvia M. , Markus Regina P. , Yamanouye Norma 
Published: December 2003

SUMMARY
The noradrenergic innervation of Bothrops jararaca venom gland is thought to be important in the production and secretion of venom. We investigated the characteristics of the α-adrenoceptor in the venom gland and its role in venom production. This receptor had relatively low sensitivity to noradrenaline (pD2=4.77±0.09, N=7)and to phenylephrine (pD2=3.77±0.06, N=11). The receptor became desensitized just after venom extraction (pD2 to phenylephrine fell to 3.27±0.02, N=6) and the sensitivity remained low for at least 15 days, returning to normal 30 days after venom extraction, by which time the snake was ready for a new cycle of venom production. Incubation of secretory cells with noradrenaline(10–4 mol l–1 for 5 min) reducedα-adrenoceptor sensitivity to the level seen after venom extraction. Blockade of catecholamine production with reserpine abolished the enlargement of the rough endoplasmic reticulum and the activation of the Golgi apparatus that are normally seen after venom extraction, and the venom production was restored by a single subcutaneous (s.c.) injection of phenylephrine (100 mg kg–1) immediately after venom extraction. Our data suggest that stimulation of the α-adrenoceptor during or shortly after biting is essential for the onset of the venom production cycle.
Strikes and startles of northern pike (Esox lucius): a comparison of muscle activity and kinematics between S-start behaviors
Authors: Schriefer Julie E. , Hale Melina E. 
Published: December 2003

SUMMARYS-starts are a major class of fast-start behaviors that serve diverse locomotor functions in fishes, playing roles in both feeding strike and escape startle events. While movement patterns are similar during strike and startle,their motor control mechanisms have not been compared. To investigate heterogeneity in S-start responses and to test the hypothesis that S-starts are generated by the same patterns of muscle activity regardless of the behavioral context in which they function, we examined kinematic and muscle activity patterns of northern pike (Esox lucius) performing feeding and escape S-starts. Movements were recorded with high-speed video (250 Hz). Muscle activity was recorded from seven electrodes, one in the left adductor mandibulae and bilaterally in the anterior, midbody and posterior epaxial white muscle. Although S-shaped movements are produced in both feeding and escape, kinematics and electromyogram (EMG) patterns differ. Stage 1(pre-propulsive movement) is significantly slower and more variable during feeding strikes and involves caudal bending with less rostral movement than recorded for startle behaviors. Correspondingly, there is strong caudal muscle activity prior to rostral activity during strikes, whereas in startles caudal muscle activity had near simultaneous onset with contralateral rostral activity. Onset of jaw muscle activity occurred significantly after the onset of axial muscle activity during feeding strikes. By contrast, during startles,jaw activity onset was nearly simultaneous with the onset of axial muscle activity. Stage 2 kinematics generally did not differ between the strike and startle; however, EMGs indicate that stage 2 movements are generated by different patterns of muscle activity for the two behaviors. Although strikes and startles are similar in their propulsive performance, they appear to be initiated and driven by fundamentally different motor control mechanisms. We suggest that S-start startle behavior is mediated by a simple system of descending reticulospinal input to spinal neurons while the S-start strike involves a more complex neural circuit, allowing greater modulation of stage 1 movements while maintaining high stage 2 performance.
First Example of Polydiacetylene from Diacetylene Monomer with Directly Linked Thienyl Sidegroup for Third-order Nonlinear Optics
Authors: Sarkar Abhijit , Okada Shuji , Matsuda Hiro , Nakanishi Hachiro 
Published: December 2003

Abstract
This work reports the first example of polydiacetylene(PDA) which has one of the side groups as a thienyl moiety directly linked to the π-conjugated backbone. The monomer, 8-(2-thienyl)-5,7-octadiynyl N-phenylcarbamate, undergoes solid state polymerisation via 1,4-addition reaction to yield the corresponding polydiacetylene. Te third order nonlinear optical susceptibility of the polymer has also been evaluated.
Synthesis and Luminescence Properties of Ru2/Cu, Ru2/Ni, and Ru2/Os Mixed Metal Polypyridine Complexes Bound by 1,3,5-Triethynylenebenzene
Authors: Osawa Masahisa , Sonoki Hirotaka , Hoshino Mikio , Wakatsuki Yasuo 
Published: December 2003

Abstract
Novel polypyridine metal complexes have been prepared, wherein two (terpy)2Ru units and one (bipy)3M (M = Cu, Os) or (bipy)Ni(H2O)4 unit (terpy = 2,2′:6,6′-terpyridine, bipy = 2,2′-bipyridine) are bonded to 1,3,5-positions of a benzene ring via ethynylene bridges. Photophysical study of these hetero trinuclear complexes has indicated effective electronic energy transfer between the metal components can take place.
Transition Metal-Catalyzed Cyclization of 2-Allylphenol to 2,3-Dihydro-2-methylbenzofuran without β-Elimination
Authors: Hori Kazushige , Kitagawa Hideki , Miyoshi Akio , Ohta Tetsuo , Furukawa Isao 
Published: December 2003

Abstract
The intramolecular nucleophilic addition of 2-allylphenol was catalyzed by RuCl3·nH2O/AgOTf–PPh3–Cu(OTf)2 to afford 2,3-dihydro-2-methylbenzofuran in good yield, while 2-(3-butenyl)phenol was converted to 3,4-dihydro-2(2H)-methylbenzopyran.
Direct Evidences for the Hydrogen Bonding in Water by Polymeric Receptors Carrying Diaminotriazine
Authors: Asanuma Hiroyuki , Hishiya Takayuki , Komiyama Makoto 
Published: December 2003

Abstract
In homogeneous aqueous solutions, copolymers of 2-vinyl-4,6-diamino-1,3,5-triazine with acrylamide selectively bind thymine and theobromine through complementary hydrogen bonding, as confirmed by 1H-NMR and ultrafiltration experiments. The corresponding monomer is inactive, indicating the predominance of polymer effect for the recognition in water.
Uniform-sized Molecularly Imprinted Polymers for β-Estradiol
Authors: Haginaka Jun , Sanbe Haruyo 
Published: December 2003

Abstract
A uniform-sized molecularly imprinted polymer (MIP) for β-estradiol has been prepared using 4-vinylpyridine and ethylenedimethacrylate as a functional monomer and cross-linker, respectively. The molecular recognition properties of the MIP were evaluated by HPLC using a mixture of phosphate buffer and acetonitrile as the eluent. The MIP showed the highest selectivity for β-estradiol. The MIP could efficiently separate estrogens from other steroids such as testosterone and corticosterone, and could separate estrogens one another.
One-Pot Synthesis Using Supported Reagents System: Conversion of β-Dicarbonyl Compounds to α-Thiocyano-β-dicarbonyl Compounds Using CuBr2/Al2O3-KSCN/SiO2
Authors: Suzuki Yoshitada , Kodomari Mitsuo 
Published: December 2003

Abstract
Transformation of β-dicarbonyl compound 1 to α-thiocyano-β-dicarbonyl compounds 3 in one-pot was achieved by using supported reagents system CuBr2/Al2O3-KSCN/SiO2, in which 1 reacts first with CuBr2/Al2O3 and the product, α-bromo-β-dicarbonyl compound 2 reacts with KSCN/SiO2 to give the final product 3 in good yield.
Persistent Tris(t-butyldimethylsilyl)silyl Radical and Its New Generation Methods
Authors: Kira Mitsuo , Obata Takeshi , Kon Itaru , Hashimoto Hisako , Ichinohe Masaaki , Sakurai Haruaki , Kyushin Soichiro , Matsumoto Hideyuki 
Published: December 2003

Abstract
A persistent silyl radical, tris(t-butyldimethylsilyl)silyl radical, (t-BuMe2Si)3Si· (1), was produced by two new methods in addition to a conventional hydrogen abstraction from the corresponding hydrosilane: one-electron oxidation of (t-BuMe2Si)3SiNa (2) by NO+BF4− and one-electron reduction of (t-BuMe2Si)3SiBr (3) by sodium.
Syntheses of Novel Fullerene Tweezers and Their Supramolecular Inclusion Complex of C60
Authors: Matsubara Hiroshi , Shimura Tomohiro , Hasegawa Akio , Semba Miki , Asano Kaori , Yamamoto Koji 
Published: December 2003

Abstract
Fullerene tweezers which have a rigid acetylenic spacers were synthesized and their inclusion abilities for C60 were examined by UV spectroscopy. From the spectra, the association constants were determined using Benesi-Hildebrand method. Fullerene tweezers with a 1,4-bis(4-oxycarbonylphenyl)butadiyne spacer showed the highest association constant for C60 (39300 ± 250 dm3mol−1 in benzene).
Synthesis, Structure and Properties of Tetranuclear Molybdenum(I) Carbonyl Thiolate Complex with Dicarboxylate Bridging Ligand
Authors: Pan Guohua , Zhuang Botao , He Lingjie , Chen Jun , Lu Jiaxi 
Published: December 2003

Abstract
A novel complex, [Bu4N]2[{Mo2(μ-SPh)2(CO)6}2(η2-μ-O2C(CH2)2CO2-μ-η2)] 1, is synthesized by the reaction of [Bu4N][Mo2(μ-SPh)2(μ-Br)(CO)6] and butanedioic in the present of Et3N in acetone. X-ray crystal structure of 1 is determined. 1 might possess an electrochemistry character of four-electron reduction in a single step.
The Lamellar Repeat Distance of Phospholipid Bilayers in Excess H2O and D2O. A Small-Angle X-Ray Scattering Study
Authors: Kobayashi Yukihiro , Fukada Kazuhiro 
Published: December 2003

Abstract
The lamellar repeat distance of multilameller stack of phosphatidylcholine membranes in excess H2O and D2O was determined by small-angle x-ray scattering measurements. When the lipids are in gel-state, the repeat distances in H2O and in D2O are almost the same. When the lipids are in liquid crystalline state, on the contrary, the repeat distances in D2O decrease by ca. 1 Å compared with that in H2O. It is confirmed that the decrease of the repeat distance is due to the decrease of the water layer thickness.
Efficient Method for Pinacol Coupling of Aromatic and Aliphatic Ketones by Using Titanium(II) Chloride and Zinc in the Presence of Pivalonitrile
Authors: Mukaiyama Teruaki , Kagayama Akifumi , Shiina Isamu 
Published: December 2003

Abstract
The reductive coupling reaction of aromatic and aliphatic ketones including acyclic aliphatic ketones proceeded smoothly to give the corresponding pinacols in good to high yields below room temperature by the combined use of titanium(II) chloride and zinc in the presence of pivalonitrile. Meso-selective formation of the coupling products was observed in the cases with some acyclic aliphatic ketones.
High Photocatalytic Activity of Pure TiO2 Mesoporous Molecular Sieves for the Degradation of 2,4,6-Trichlorophenol
Authors: Dai Qing , He Nongyue , Guo Yan , Yuan Chunwei 
Published: December 2003

Abstract
Pure TiO2 mesoporous molecular sieves. Ti-TMS, were first synthesized using alkylphosphate surfactant with different chain length. A high photocatalytic activity for the degradation of pollutant over these materials was first presented here. The Preliminary results are reported of an investigation into the photodegradation of 2,4,6-trichlorophenol, TCP, in the presence of suspended Ti-TMS solution, compared with TiO2 nanoparticles under the same conditions.
Formation and Hydrogenation of the Nitrogen Stored in Iron-based Intermetallic Compounds
Authors: Machida Ken-ichi , Ito Masahiro , Hirose Kazuhiro , Adachi Gin-ya 
Published: December 2003

Abstract
From a study on nitrogenation and hydrogenation characteristics of Laves phase-type intermetallic compound (TiFe2) and its surface modified composite (Ru/Al2O3/TiFe2), nitrogen molecule was found to be converted to ammonia via formation of TiFe2Nx at ambient pressure.
Photooxidation of Propene by Molecular Oxygen over FSM-16
Authors: Yoshida Hisao , Murata Chizu , Inaki Yoshitaka , Hattori Tadashi 
Published: December 2003

Abstract
Mesoporous silica (FSM-16) was found to exhibit a much higher activity for propene photooxidation than amorphous silica and to give different products distribution from those on silica, thus proposing FSM-16 as a new type of photooxidation catalyst.
Enantioselective Borohydride 1,4-Reduction of α, β-Unsaturated Carboxamides Using Optically Active Cobalt(II) Complex Catalysts
Authors: Yamada Tohru , Ohtsuka Yuhki , Ikeno Taketo 
Published: December 2003

Abstract
The enantioselective borohydride reduction catalyzed by cobalt(II) complex was successfully applied to 1,4-reduction of β,β-disubstituted α,β-unsaturated carboxamides. In the presence of less than 1 mol% of optically active aldiminato cobalt(II) complex catalyst, the corresponding carboxamides were obtained in high yields with high enantiomeric excesses.
Chiral Zirconium-Catalyzed Asymmetric Mannich-Type Reactions Using Acylhydrazones as Imine Equivalents
Authors: Kobayashi Shu , Hasegawa Yoshiki , Ishitani Haruro 
Published: December 2003

Abstract
In the presence of a catalytic amount of a new zirconium catalyst, prepared from zirconium(IV) t-butoxide and (R)-3,3′-dibromo-1,1′-bi-2-naphthol, 4-trifluoromethylbenzoylhydrazones reacted with silyl enolates to afford the corresponding adducts, β-N′-acylhydrazinocarbonyl compounds, in good yields with high enantiomeric excesses. Reductive cleavage of the nitrogen-nitrogen bond of the hydrazino compound using samarium diiodide gave a chiral β-aminocarbonyl compound. In addition, the hydrazino compound was also successfully converted to chiral β-lactam and pyrazolidinone derivatives.
Synthesis of μ-Oxo Complexes of Group 4 Bridged-Metallocenes: A Convenient Separation of meso and racemo Isomers
Authors: Koyama Mina , Kimura Keisuke , Nakano Masato , Yamazaki Hiroshi 
Published: December 2003

Abstract
Treatment of a 1:1 mixture of meso and racemo isomers of the group 4 bridged-metallocene dichlorides, R2A(R′nC5H4−n)2MCl2 (R2 = Me2, (CH2)4; A = Si, Ge; R′ = Me, t-Bu; M = Zr, Hf; n = 1-3) with 0.5 equivalent of amine afforded an μ-oxo complex arising from the meso isomer and left the racemo isomer intact, providing a convenient method of separation of the isomeric mixture.
Picosecond Transient Infrared Spectrum of Electronically Excited trans-Stilbene in Acetonitrile and Excited Molecular Structure
Authors: Okamoto Hiromi 
Published: December 2003

Abstract
The picosecond transient infrared spectrum of the lowest excited singlet (S1) state of trans-stilbene in an acetonitrile solution has been recorded in the fingerprint region. Several absorption bands (absorption coefficients ε ≤ 100) attributable to in-plane vibrations of the S1 species have been observed. A minor contribution of a polarized structure to the S1 state is suggested.
Direct Hydrogenation of Carboxylic Acids to Corresponding Aldehydes Catalyzed by Palladium Complexes in the Presence of Pivalic Anhydride
Authors: Nagayama Kazuhiro , Shimizu Isao , Yamamoto Akio 
Published: December 2003

Abstract
Carboxylic acids are catalytically hydrogenated into corresponding aldehydes by palladium complexes in the presence of pivalic (trimethylacetic) anhydride under H2. Less hindered aliphatic and aromatic acids are reduced to aldehydes in high yields. The method is also applicable to hydrogenation of dibasic carboxylic acids and carboxylic acids containing heterocyclic groups.
Effect of Formyl Group on Photoinduced Hydrogen Atom Transfer and cis-trans Isomerization of 2[2-(2-Pyrrolyl)ethenyl]pyridine
Authors: Arai Tatsuo , Hozumi Yasutomo 
Published: December 2003

Abstract
Formyl group as a substituent enhanced the hydrogen atom transfer in the excited singlet state as well as the intersystem crossing from the singlet to the triplet excited state of 2[2-(2-pyrrolyl)ethenyl]pyridine.
Synthesis of 4-Hydroxy-2-cyclopentenone Derivatives by [3 + 2] Annulation of β-Heteroatom-Substituted Acryloylsilanes and Lithium Enolate of Methyl Ketones
Authors: Takeda Kei , Ohtani Yasuhiro , Ando Emi , Fujimoto Ken-ichi , Yoshii Eiichi , Koizumi Toru 
Published: December 2003

Abstract
The [3 + 2] annulation using β-[2-(pyridyl)thio] and β,β-dichloro derivatives of acryloylsilane and the lithium enolate of methyl ketones successfully proceeded to afford 4-alkyl-4-hydroxy-3-(2-pyridylthio)cyclopentanone and 4-alkyl-3-chloro-4-hydroxy-2-cyclopentenone, respectively.
Molecular Assembling of π-Conjugated Poly(pyrimido[5,4-d]pyrimidine-2,6-diyl)s Prepared by Organometallic Polycondensation
Authors: Yamamoto Takakazu , Lee Bang-Lin 
Published: December 2003

Abstract
π-conjugated poly(pyrimido[5,4-d]pyrimidine-2,6-diyl)s prepared by an organometallic polycondensation and having long side chains are considered to take an end-to-end type packing in the solid as judged from their X-ray diffraction patterns. Their UV-visible spectra show a main absorption peak at about 450 nm, supporting the presence of an expanded π-conjugation system.
Ordering of Dipeptide Molecules on Guanidinium Bilayer Membrane
Authors: Watanabe Eiji , Kunitake Toyoki 
Published: December 2003

Abstract
Dipeptide molecules were shown by induced circular dichrosim to bind in specific manners on guanidinium-functionalized bilayer membranes in 40 vol% ethanol/water. The carboxylate-guanidinium interaction determined the peptide alignment.
Effect of Cation Content of Polycation-type Gene Carriers on in vitro Gene Transfer
Authors: Yamaoka Tetsuji , Hamada Nobuhito , Iwata Hiroo , Murakami Akira , Kimura Yoshiharu 
Published: December 2003

Abstract
Dextran-based polycations having different cation structures and contents were evaluated as carriers for transferring genes to mammalian cells in vitro. 2-(N,N-Dimethylamino)ethyl dextran having tertiary-amine-type cations induced very high transient gene expression in the COS-1 cells, while 2-aminoethyl dextran having primary-amine-type cations did not induced it at all. The cation content of the former was also found to affect the transient gene expression and the cytotoxicity of the polycations.
Heterodinuclear Complex Cp*Ru(CO)2Co(CO)4 (Cp* = η5–C5Me5) Induced Selective Dimerization of Terminal Alkynes
Authors: Matsuzaka Hiroyuki , Ichikawa Koji , Ishii Tomohiko , Kondo Mitsuru , Kitagawa Susumu 
Published: December 2003

Abstract
A heterobimetallic complex Cp*Ru(CO)2Co(CO)4 1 (Cp* = η5–C5Me5) and its selective reactions with alkynes are reported. Stoichiometric head-to-tail dimerization of tolylacetylene affords the dinuclear metallacyclopentadiene complex Cp*(CO)Ru{η2:η4–μ2–C(Tol)CHC(Tol)CH}Co(CO)2 2 whereas catalytic head-to-head coupling of methylpropiolate yields (E)-(MeO2C)CH=CH(C≡CCO2Me) 3. The structure of 2 has been determined by X-ray crystallography.
Solvolysis of β,β-Dialkylvinyliodonium Salt: Primary Vinyl Cation Intermediate and Alkyl Participation
Authors: Okuyama Tadashi , Sato Koichi , Ochiai Masahito 
Published: December 2003

Abstract
Solvolysis of both E and Z isomers of a β,β-dialkylvinyl(phenyl)iodonium salt gave extensively rearranged products. A mechanism involving a primary vinyl cation intermediate as well as the alkyl participation leading to secondary vinyl cations is proposed.
A Preferable Probe Molecule for Evaluating the Surface Acidic Properties of Sulfated Zirconium and Iron Oxides by Microcalorimetric Adsorption Measurement
Authors: Han Yuwang , Zou Hu , Shen Jianyi , Ji Weijie , Chen Yi 
Published: December 2003

Abstract
Microcalorimetric adsorption of dimethyl ether as well as ammonia on sulfated zirconium and iron oxides indicated that the former is a preferable probe molecule to evaluate surface acid strength of this kind of strong solid acids.
Formation of Cu Nanoparticles from CuO Powder by Laser Ablation in 2-Propanol
Authors: Yeh Ya-Huey , Yeh Ming-Shin , Lee Yi-Pei , Yeh Chen-Sheng 
Published: December 2003

Abstract
Laser ablation technique has been employed to generate Cu nanoparticles from CuO powder in 2-propanol. The resulting copper colloids are conspicuously stable under aerobic and protective agent-free conditions. Larger particles have also been produced through the photoinduced aggregation.
Photo-Induced Reaction Dynamics in Poly(di-n-hexylsilylene) by Excimer Laser Flash Photolysis
Authors: Seki Shu , Tsuji Shou , Nishida Kazutaka , Matsui Yoshinori , Yoshida Yoichi , Tagawa Seiichi 
Published: December 2003

Abstract
KrF excimer laser induced photo-dissociation reaction was observed for poly(di-n-hexylsilylene) (PDHS) in several solvents at room temperature by using transient absorption spectroscopy technique within the wavelength range at 340-1600 nm. Transient absorption strongly depended on solvents suggesting that observed near UV absorption was ascribed to polysilylated silyl radicals in cyclohexane and tetrahydrofran (THF), and electron photoejection was also observed in CH2Cl2 giving radical cations of PDHS.
Oxidation of 2-Chlorophenol Effected by Na+ and CuO/Zeolites in Supercritical Water
Authors: Lin Kuen-Song , Wang H Paul , Yang Y W 
Published: December 2003

Abstract
Supercritical water oxidation (SCWO) of 2-chlorophenol (2CP) is very effected in the presence of 0.02 M Na+ that reduces the formation of by-products (higher chlorinated phenols). The undesired by-products in the SCWO of 2CP catalyzed by CuO in zeolites Y, ZSM-5, and ZSM-48 is also reduced extensively. Chlorine-bonded CuO species in the channels of ZSM-5 are not observed by EXAFS (extended X-ray adsorption fine structure) spectroscopy.
Dip-Coated Ru-Mo-O/Ti Electrodes for Electrochemical Capacitors
Authors: Takasu Yoshio , Nakamura Takashi , Murakami Yasushi 
Published: December 2003

Abstract
RuO2-MoO3/Ti clectrodes prepared by a dip-coating method provide an extremely large pseudocapacitance showing that they have a potential for use as electrochemical capacitors. The highest pseudocapacitance was 208 F g−1 for RuO2(50)-MoO3(50)/Ti. The voltammetric charge of this electrode, 166 C g−1 between 0.3 and 1.1 V (vs. RHE), corresponds to 0.48 protons contributed to the adsorption and desorption on every loaded ruthenium, if the probable contribution of molybdenum to the pseudocapacitance was neglected.
Dinuclear Pyridine-1-Imine-Bridged Rhodium(III) Complexes. Intramolecular Carbon-Hydrogen Bond Activation
Authors: Retbøll Mikael , Ishii Youichi , Hidai Masanobu 
Published: December 2003

Abstract
Novel dinuclear pyridine-1-imine Rh(III) complexes [Cp*Rh(μ2-Cl){μ2-NHNC5H4(4-Me)}2RhCp*]Cl[PF6]2 (3) and [Cp*Rh(μ2-Cl){μ2-NHNC5H3(2-CH2)(6-Me)}RhCl-Cp*][PF6](4) were synthesized by the reaction of [Cp*RhCl2]2 with [NH2NC5H4(4-Me)][PF6] and [NH2NC5H3(2,6-Me2)][PF6], repectively, in the presence of a base. The formation of 4 involves C(sp3)-H bond activation at the benzylic position of a pyridine-1-imine ligand.