bluuebunny/crossref_metadata_2025_split huggingface dataset:
Systematic review and meta‐analysis of methods of diagnostic assessment for urinary incontinence
Authors: Martin J.L. , Williams K.S. , Sutton A.J. , Abrams K.R. , Assassa R.P. 
Published: October 2006

AbstractAimsTo evaluate the performance of all tests proposed for the diagnosis of urinary incontinence.MethodsA systematic review and meta‐analyses of the published literature of methods for diagnostic assessment of urinary incontinence.ResultsOne hundred twenty‐one papers were included in the full review [Martin et al., 2006]. The quality of reporting in the primary studies was poor which reduced the number of studies that could be included in the data analysis. The literature suggests that women with urodynamic stress incontinence (USI) can be correctly identified in primary care from clinical history alone with a sensitivity of 0.92 (95% C.I.: 0.91–0.93) and specificity of 0.56 (0.53–0.60). A clinical history for the diagnosis of detrusor overactivity (DO) was found to be 0.61 (0.57–0.65) sensitive and 0.87 (0.85–0.89) specific. Within secondary care imaging of leakage by ultrasound was found to be effective in the diagnosis of USI in women with a sensitivity of 0.89 (0.84–0.93) and specificity of 0.82 (0.73–0.89).ConclusionsClinical interpretation of the results of the review is difficult because few studies could be synthesized and conclusions made. The published evidence suggests that a large proportion of women with USI can be correctly identified in primary care from history alone. Ultrasound offers a useful diagnostic tool which could be used prior to, and possibly instead of, multi‐channel urodynamics in some circumstances. If a patient is to undergo urodynamic testing, multi‐channel urodynamics is likely to give the most accurate result. Further primary studies adhering to STARD guidelines are required on commonly used tests. Neurourol. Urodynam. 25:674–683, 2006. © 2006 Wiley‐Liss, Inc.
A family of H1 ‐conforming finite element spaces for calculations on 3D grids with pinch‐outs
Authors: Lyons S. L. , Parashkevov R. R. , Wu X. H. 
Published: October 2006

AbstractIn this paper, we develop scalar nodal bases for a family of shapes that degenerate from hexahedra due to the merging of two neighbouring vertices on an edge with zero length, a phenomenon commonly referred to as ‘pinch‐out’. These nodal bases together with compatible mapping functions from the reference space to the physical space can be used to build H1 conforming, finite element spaces on meshes consisting of mixed elements with triangular and non‐planar quadrilateral faces. A novel feature in our constructions is the use of rational functions, whose first partial derivatives are uniformly bounded albeit discontinuous at isolated points. Properties of these bases and resulting finite element spaces are studied. Copyright © 2006 John Wiley & Sons, Ltd.
Cascade configuration of logical gates processing information encoded in molecular potentials
Authors: Seminario Jorge M. , Yan Liuming 
Published: October 2006

AbstractWe demonstrate that the outputs of two molecular devices encoding information as electrostatic potentials are able to trigger a third one and yield a correct truth table, thus demonstrating the possibility to successfully interconnect extremely low‐power consumption molecular devices. © 2006 Wiley Periodicals, Inc. Int J Quantum Chem, 2007
Rapid and sensitive determination of donepezil in human plasma by liquid chromatography/tandem mass spectrometry: application to a pharmacokinetic study
Authors: Xie Zhiyong , Liao Qiongfeng , Xu Xinjun , Yao Meicun , Wan Jinzhi , Liu Dan 
Published: October 2006

AbstractA liquid chromatography/tandem mass spectrometry (LC/MS/MS) method was developed and validated for the determination of donepezil in human plasma samples. Diphenhydramine was used as the internal standard. The collision‐induced transition m/z 380 → 91 was used to analyze donepezil in selected reaction monitoring mode. The signal intensity of the m/z 380 → 91 transition was found to relate linearly with donepezil concentrations in plasma from 0.1–20.0 ng/mL. The lower limit of quantification of the LC/MS/MS method was 0.1 ng/mL. The intra‐ and inter‐day precisions were below 10.2% and the accuracy was between −2.3% and +2.8%. The validated LC/MS/MS method was applied to a pharmacokinetic study in which healthy Chinese volunteers each received a single oral dose of 5 mg donepezil hydrochloride. The non‐compartmental pharmacokinetic model was used to fit the donepezil plasma concentration‐time curve. Maximum plasma concentration was 12.3 ± 2.73 ng/mL which occurred at 3.50 ± 1.61 h post‐dosing. The apparent elimination half‐life and the area under the curve were, respectively, 60.86 ± 12.05 h and 609.3 ± 122.2 ng · h/mL. LC/MS/MS is a rapid, sensitive and specific method for determining donepezil in human plasma samples. Copyright © 2006 John Wiley & Sons, Ltd.
Random trees and general branching processes
Authors: Rudas Anna , Tóth Bálint , Valkó Benedek 
Published: October 2006

AbstractWe consider a tree that grows randomly in time. Each time a new vertex appears, it chooses exactly one of the existing vertices and attaches to it. The probability that the new vertex chooses vertex x is proportional to w(deg(x)), a weight function of the actual degree of x. The weight function w : ℕ → ℝ+ is the parameter of the model.In 4 and 11 the authors derive the asymptotic degree distribution for a model that is equivalent to the special case, when the weight function is linear. The proof therein strongly relies on the linear choice of w.Using well‐established results from the theory of general branching processes we give the asymptotical degree distribution for a wide range of weight functions. Moreover, we provide the asymptotic distribution of the tree itself as seen from a randomly selected vertex. The latter approach gives greater insight to the limiting structure of the tree.Our proof is robust and we believe that the method may be used to answer several other questions related to the model. It relies on the fact that considering the evolution of the random tree in continuous time, the process may be viewed as a general branching process, this way classical results can be applied. © 2006 Wiley Periodicals, Inc. Random Struct. Alg., 2007
The VC dimension of k‐uniform random hypergraphs
Authors: Ycart B. , Ratsaby J. 
Published: October 2006

AbstractA set of vertices is shattered in a hypergraph if any of its subsets is obtained as the intersection of an edge with the set. The VC dimension is the size of the largest shattered subset. Under the binomial model of k‐uniform random hypergraphs, the threshold function for the VC dimension to be larger than a given integer is obtained. The same is done for the testing dimension, which is the largest integer d such that all sets of cardinality d are shattered. © 2006 Wiley Periodicals, Inc. Random Struct. Alg., 2007
Comparison of surface and bulk doping levels in chemical polypyrroles of low, medium and high conductivity
Authors: Carrasco Pedro M. , Cortazar Milagros , Ochoteco Estibalitz , Calahorra Elena , Pomposo José A. 
Published: October 2006

AbstractChemical polypyrroles (PPys) of low (σ < 75 S/cm), medium (75 < σ < 200 S/cm) and high electrical conductivity (σ > 200 S/cm) having chloride dopants have been investigated by XPS, chloride ion‐selective electrode (ISE) measurements and high‐resolution termogravimetric analysis (TGA). The average surface doping level in these PPys was 0.28 ± 0.03 as determined from deconvoluted XPS N 1s, Cl 2p and C 1s spectra by using the well‐established N+/N and Cl−/N atomic ratios as well as a new ratio denoted as Cα*/CαTotal. This new ratio provides an estimation of the relative amount of α‐C atoms in charged pyrrole units per total α‐C atoms. The average bulk doping level in these materials was 0.31 ± 0.02 from direct chloride ISE measurements. High‐resolution TGA was employed for the first time in the determination of the amount of hydrogen chloride evolved from the PPy samples during degradation at high temperatures. The resulting average bulk doping level by TGA was 0.30 ± 0.04 for these PPys, in very good agreement with the ISE results. Since surface and bulk doping levels are almost identical for the PPys of low, medium and high conductivity, the differences in conductivity between samples have been attributed to differences in conjugation length among them. For PPy of high conductivity (σ = 288 S/cm), a conjugation length 2.6 times higher than that of PPy of low conductivity (σ = 29 S/cm) has been calculated. Copyright © 2006 John Wiley & Sons, Ltd.
Carbon Nanotube–DNA Nanoarchitectures and Electronic Functionality
Authors: Wang Xu , Liu Fei , Andavan G. T. Senthil , Jing Xiaoye , Singh Krishna , Yazdanpanah Vahid R. , Bruque Nicolas , Pandey Rajeev R. , Lake Roger , Ozkan Mihrimah , Wang Kang L. , Ozkan Cengiz S. 
Published: October 2006

AbstractBiological molecules such as deoxyribonucleic acid (DNA) possess inherent recognition and self‐assembly capabilities, and are attractive templates for constructing functional hierarchical material structures as building blocks for nanoelectronics. Here we report the assembly and electronic functionality of nanoarchitectures based on conjugates of single‐walled carbon nanotubes (SWNTs) functionalized with carboxylic groups and single‐stranded DNA (ssDNA) sequences possessing terminal amino groups on both ends, hybridized together through amide linkages by adopting a straightforward synthetic route. Morphological and chemical‐functional characterization of the nanoarchitectures are investigated using scanning electron microscopy, transmission electron microscopy, atomic force microscopy, energy‐dispersive X‐ray spectroscopy, Raman spectroscopy, and Fourier‐transform infrared spectroscopy. Electrical measurements (I–V characterization) of the nanoarchitectures demonstrate negative differential resistance in the presence of SWNT/ssDNA interfaces, which indicates a biomimetic route to fabricating resonant tunneling diodes. I–V characterization on platinum‐metallized SWNT–ssDNA nanoarchitectures via salt reduction indicates modulation of their electrical properties, with effects ranging from those of a resonant tunneling diode to a resistor, depending on the amount of metallization. Electron transport through the nanoarchitectures has been analyzed by density functional theory calculations. Our studies illustrate the great promise of biomimetic assembly of functional nanosystems based on biotemplated materials and present new avenues toward exciting future opportunities in nanoelectronics and nanobiotechnology.
Synthesis, Characterization and Crystal Structure of a Silver(I) Complex containing AMTT (AMTT = 4‐amino‐5‐methyl‐2H‐1,2,4‐triazole‐3(4H)‐thione)
Authors: Yazdanbakhsh Mohammad , Hakimi Mohammad , Heravi Majid M. , Boese Roland 
Published: October 2006

AbstractThe reaction of 4‐amino‐5‐methyl‐2H‐1,2,4‐triazole‐3(4H)‐thione with AgNO3 in methanol led to the complex [Ag(ATT)2]NO3 (2). 2 was characterized by elemental analyses, IR, 1HNMR and Raman spectroscopy as well as single‐crystal X‐ray diffraction. Crystal data for 2 at −70 °C: space group P21/n with a = 1356.7(12), b = 770.4(7), c = 1475.2(12) pm, β = 111.730(15)°, Z = 4, R1 = 0.0402.
Coordination Centres of Purine Nucleotides: Adenosine‐5′‐diphosphate and Adenosine‐5′‐triphosphate in their Reactions with Nickel(II), Cobalt(II) and Tetramines
Authors: Gasowska Anna 
Published: October 2006

AbstractInteractions between the nucleotides: adenosine‐5′‐diphosphate (ADP) and adenosine‐5′‐triphosphate (ATP) with NiII and CoII ions, as well as with spermine (Spm) and 1,11‐diamine‐4,8‐diazaundecane (3,3,3‐tet) are the subject of this study. Composition and stability constants of mixed complexes thus formed have been determined on the basis of the potentiometric measurements, whereas interaction centres in ligands have been identified by VIS and NMR spectral parameter analysis. Mixed tetraprotonated complexes with NiII, i.e. Ni(ADP)H4(Spm), Ni(ATP)H4(Spm), Ni(ADP)H4(3,3,3‐tet) and Ni(ATP)H4(333‐tet), are identified as ML·······L′ type adducts, in which the main coordination centre is the nucleotide nitrogen N(1) or N(7) donor atom, and the fully protonated polyamine is engaged in noncovalent interactions with nucleotide phosphate group oxygen atoms. Ni(ADP)H2(Spm), Ni(ATP)H2(Spm), Ni(ADP)H2(3,3,3‐tet) and Ni(ATP)H2(3,3,3‐tet) complexes represent the {N3} coordination type In diprotonated mixed complexes of NiII with spermine are weak noncovalent interligand interactions, providing an additional stabilising effect. Formation of ML·······L′ type molecular complexes has been observed in systems with CoII: Co(ADP)H4(Spm), Co(ATP)H4(Spm), Co(ADP)H4(3,3,3‐tet) and Co(ATP)H4(3,3,3‐tet), in which the N(7) atom and oxygen atoms of the phosphate group are involved in coordination and the fully protonated polyamine is engaged in noncovalent interactions with the nucleotide N(1).
LaPt2Ge2 und EuPt2Ge2 – Neubestimmung der Kristallstrukturen
Authors: Imre Anette , Hellmann Andrea , Mewis Albrecht 
Published: October 2006

AbstractLaPt2Ge2 and EuPt2Ge2 – Revision of the Crystal StructuresLaPt2Ge2 was rechecked by single crystal X‐ray methods resulting in space group P21/c (in place of P21) and the lattice constants a = 9.953(3), b = 4.439(1), c = 8.879Å, β = 90.62(4)°, and Z = 4. In contrast to previous reports the cell volume had to be doubled. The same is true for EuPt2Ge2 (a = 9.731(1), b = 4.446(1), c = 8.823(1) Å, β = 91.26(1)°). The crystal structures correspond to a monoclinic variant of the tetragonal CaBe2Ge2 type, whereas the distortion can be described as different rotations of the coordination polyhedra around the La and Eu atoms, respectively. It is most likely that the compounds APt2Ge2 with A = Ca, Y, La‐Dy undergo phase transitions at higher temperatures forming then the undistorted CaBe2Ge2 type, space group P4/nmm. This was confirmed for SmPt2Ge2 (a = 4.292(1), c = 9.980(1) Å; Z = 2) and might also be the case for APt2Ge2 with A = Ca, Nd, Sm, Eu, and Gd.
Selten‐Erd‐Metall‐Koordinationspolymere: Synthesen und Kristallstrukturen von sechs neuen Pimelinaten, [M(Pim)(PimH)(H2O)](H2O) (M = Ce, Pr) und [M2(Pim)3(H2O)4] (M = Tb, Ho, Er, Tm)
Authors: Flemig Holger , Pantenburg Ingo , Meyer Gerd 
Published: October 2006

AbstractRare‐Earth‐Metal Coordination Polymers: Syntheses and Crystal Structures of Six New Pimelinates, [M(Pim)(PimH)(H2O)](H2O) (M = Ce, Pr) and [M2(Pim)3(H2O)4] (M = Tb, Ho, Er, Tm)The new rare‐earth metal carboxylates [M(Pim)(PimH)(H2O)](H2O) (M = Ce (1), Pr (2)) and [M2(Pim)3(H2O)4] (M = Tb (3), Ho (4), Er (5), Tm (6)) were prepared from the reaction of pimelinic acid with CeO2, Pr6O11, Tb4O7, HoCl3, ErCl3 and Tm(NO3)3, respectively. Their crystal structures were determined by single‐crystal X‐ray diffraction. [M(Pim)(PimH)(H2O)](H2O) crystallize in the monoclinic space group P21/n (no. 14) with a = 909.6(1), b = 870.6(1), c = 2240.5(2) pm, β = 92.30(1)°, Z = 4 (crystal data for M = Ce). The isostructural pimelinate‐hydrates [M2(Pim)3(H2O)4] crystallize with orthorhombic symmetry, Pbcn (no. 60), with a = 1392.5(1), b = 902.3(1), c = 2408.8(2) pm, Z = 4 (crystal data for M = Tb). The rare‐earth cations have coordination numbers of 10 (1, 2) and 9 (3, 4, 5 and 6), respectively. In the crystal structure of [M(Pim)(PimH)(H2O)](H2O) bidentate and tridentate‐bridging carboxylate groups form rather dense structures in which chains are bridged to layers and further to networks. Pimelinic acid molecules fill the channels. In [M2(Pim)3(H2O)4] tridentate‐bridging carboxylate groups coordinating to two rare‐earth ions lead to dimers that are linked with other dimers to strands. The channels thus formed between the strands are rather small in diameter. They do not contain any non‐coordinated water molecules.
Soluble Monometallic Salen Complexes Derived from O‐functionalized Salicylaldehydes as Metalloligands for the Synthesis of Heterobimetallic Complexes
Authors: Fritzsche Sebastian , Lönnecke Peter , Höcher Thomas , Hey‐Hawkins Evamarie 
Published: October 2006

AbstractThe reaction of 2,3‐diamino‐2,3‐dimethylbutane (tmen) with 3‐hydroxysalicylaldehyde (3hsal), 4‐hydroxysalicylaldehyde (4hsal), and 5‐hydroxysalicylaldehyde (5hsal) or 3‐carboxysalicylaldehyde (3csal) gave the hydroxy‐functionalized salen ligands H43hsaltmen, H44hsaltmen and H45hsaltmen, or the 3‐carboxy‐functionalized ligand H43csaltmen, which were characterized by 1H, 13C{1H} NMR and IR spectroscopy. The nickel(II) and copper(II) complexes [Ni(H23hsaltmen)], [Ni(H24hsaltmen)], [Ni(H25hsaltmen)], [Cu(H23hsaltmen)] and [Cu(H24hsaltmen)] were synthesized in high yield (78–99 %) starting from H43hsaltmen, H44hsaltmen and H45hsaltmen and the corresponding metal(II) acetates. The complexes are soluble in acetone, ethanol, methanol, thf and dmso. The reaction of H43csaltmen and nickel(II) acetate gave [Ni(H23csaltmen)] in 40 % yield. The disodium salt of the corresponding copper(II) complex [Cu(Na23csaltmen)] was obtained in 66 % yield in a template reaction from 3‐carboxysalicylaldehyde, tmen, copper(II) acetate and sodium hydroxide, and was characterized by EPR spectroscopy and mass spectrometry. All complexes were identified by IR spectroscopy and elemental analysis, the nickel complexes also by NMR spectroscopy, and [Ni(H23hsaltmen)], [Ni(H24hsaltmen)] and [Ni(H23csaltmen)] by X‐ray crystallography. The homobinuclear copper complex [Cu2(3hsaltmen)] was prepared in 91 % yield from H43hsaltmen, two equivalents of Cu(CH3COO)2·H2O and four equivalents of LiOH·H2O and was characterized by IR spectroscopy, elemental analysis and mass spectrometry. The trinuclear complex [Zr{Ni(3hsaltmen)}2] was obtained from [Zr(NEt2)4] and [Ni(H23hsaltmen)] (ratio 1:2) and characterized by FAB and APPI mass spectrometry and X‐ray crystallography. The redox potential of the trinuclear complex [Zr{Ni(3hsaltmen)}2] is shifted by 0.04 V to positive potential compared to [Ni(H23hsaltmen)], while the redox potential of the binuclear copper complex [Cu2(3hsaltmen)] is shifted by 0.22 V to negative potential compared to [Cu(H23hsaltmen)].
Synthesis, Characterization and X‐ray Crystal Structures of [Cu(ncaen)2]ClO4 and [Cu(nca2en)(PPh3)2]BPh4 Complexes
Authors: Dehghanpour Saeed , Kempe Rhett , Balireddi Sreenivas , Fotouhi Lida , Tabasia Farzaneh , Mojahed Fresia , Salek Samaneh 
Published: October 2006

AbstractA novel ligand, N,N′‐Bis‐[3‐(2‐nitrophenyl)‐allylidene]‐ethane‐1,2‐diamine (nca2en), and their corresponding copper(I) complexes, [Cu(ncaen)2]ClO4 (1), and [Cu(nca2en)(PPh3)2]BPh4 (2), have been synthesized and characterized by CHN analyses, 1H and 13C‐NMR, IR, and UV‐Vis spectroscopy. The crystal and molecular structures of [Cu(ncaen)2]ClO4 (1), and [Cu(nca2en)(PPh3)2]BPh4 (2), were determined by X‐ray crystallography from single‐crystal data. The coordination polyhedron about the copper(I) atom in the two complexes is best described as a distorted tetrahedron. A quasireversible redox behavior is observed for complex 1 and 2 (E1/2 = 0.55 and 0.95 V, respectively).
Syntheses and Characterizations of Two Novel Silver Polymers from Assembly 5‐Bromosalicylic Acid and 2‐Aminobenzoic Acid, with High Inhibitory Activities against Jack Bean Urease
Authors: Cheng Kui , Zhu Hai‐Liang , Li Yu‐Guang 
Published: October 2006

AbstractTwo novel two‐dimensional silver(I) polymers, [Ag(5‐bsa)]n (1) and [Ag(2‐aba)]n (2) (5‐bsaH = 5‐bromosalicylic acid and 2‐abaH = 2‐aminobenzoic acid), have been synthesized from the reaction of Ag2O and carboxylate ligands in ammonia solution and structurally determined by single‐crystal X‐ray diffraction analyses. 1 crystallizes in the monoclinic space group P21/c with a = 7.316(2), b = 8.171(2), c = 13.051(3) Å, U = 777.0(3) Å3, β = 95.14(3) and Z = 4. 2 crystallizes in the orthorhombic space group Pna21 with a = 5.9486(8), b = 24.227(3), c = 4.9042(6) Å, U = 706.8(2) Å3, and Z = 4. In 1, 5‐bsa serves as tridentate ligands coordinating to three Ag+ ions through its hydroxyl and bridging ligand carboxyl groups, with the Ag‐Ag bonding and two carboxylate ions defined in a slight distorted plane and further extending into a two‐dimension layer through the hydroxyl and the overlapping and off‐set stacking interactions. In 2, adjacent Ag+ ions via Ag‐Ag bonding interactions generate a one‐dimension silver chain and adjacent silver chains are further linked by μ2‐N, O atoms of 2‐aba to result in a two‐dimensional configuration, with the inter‐chain hydrogen bonding interaction forming a three‐dimension supramolecular structure. Both the two silver(I) complexes have strong inhibitory activities against Jack Bean urease with the IC50 values of 21.98 μM for 1 and 25.34 μM for 2, but neglectable inhibition activity on Xanthine Oxidase.
Tetramethylammoniumamalgam, [N(CH3)4]Hg8
Authors: Hoch Constantin , Simon Arndt 
Published: October 2006

AbstractTetramethyl Ammonium Amalgam, [N(CH3)4]Hg8Crystals of tetramethyl ammonium amalgam with the composition [N(CH3)4]Hg8 were prepared by electrolysis. According to temperature‐dependent X‐ray diffraction experiments the compound transforms into an amorphous product above 6 °C; the decomposition is a multi‐stage process as shown by DTA experiments. X‐ray examinations of crystalline aggregates indicate a structure of low symmetry with remarkable similarities to that of α‐Hg.
Substitution Reactions on CaI2: Synthesis of Mixed Metal Lithium‐Calcium‐Phenolates, and Cluster Transformation as a Function of Solvent
Authors: Maudez William , Häussinger Daniel , Fromm Katharina M. 
Published: October 2006

AbstractFor the first time, unsubstituted mixed lithium and calcium phenolates could be structurally characterized in the solid state. Compound [CaLi6(μ3‐OPh)8(thf)6] (1), was obtained from the reaction of CaI2 with LiOPh in THF, and features two heterocubane units fused via the calcium ion. Upon recrystallization from the bidentate ligand DME, the aggregate [Ca2(dme)2(μ‐OPh)6{Li(dme)}2] (2) is obtained, in which the metal ions form a chain motif, being pairwise bridged by phenolate. The transformation of 1 into 2 upon addition of DME can be followed by 7Li‐NMR spectroscopy.
Crystal Structure of NbOBr2
Authors: Beck Johannes , Kusterer Christian 
Published: October 2006

AbstractBlack, needle shaped crystals of NbOBr2 were formed by reduction of NbOBr3 with InBr at 500 °C. It crystallizes isotypically to NbOI2 (monoclinic, space group C2, a = 13.833(4), b = 3.9079(6), c = 7.023(2) Å, β = 105.026(10)°). The structure consists of NbO2Br4 octahedra, which are connected to layers $^{2}_{\infty}\rm [NbO_{2/2}Br_{4/2}]$. Nb atoms of edge sharing octahedra form Nb2 pairs with Nb–Nb distances of 3.144(5) Å. Within corner‐sharing octahedra alternating long and short Nb–O bonds are present, causing the polarity of the structure.
Aryl Phosphine Nickel(II) and Palladium(II) Complexes with N,O‐Amino‐carboxylate Chelate Ligands [(Aryl)(R3P)M(N,O‐α‐aminocarboxylate)](M = Ni, Pd). Catalysts for the Polymerization of Olefins
Authors: Ponikwar Walter , Mihan Shahram , Sünkel Karlheinz , Beck Wolfgang 
Published: October 2006

AbstractThe title complexes [(Aryl)(R3P)M(N,O‐α‐aminocarboxylate)] (M = Ni, Pd) were synthesized by reaction of [(o‐tolyl)(Ph3P)2NiBr] or of [(p‐Me3CC6H4)(o‐tolyl3P)Pd(μ‐Br)]2 with the anions of α‐amino acids. The spectroscopic data indicate that the nickel complexes are formed as mixtures of isomers, whereas for the palladium complexes only one isomer is observed. The complex [(o‐tolyl)(Ph3P)Ni(glycinate)] is – in the presence of AlEt3 – a highly active catalyst for the polymerization of ethylene [up to 1800 kg PE / (mol Ni·h)] and gives polymers with remarkably high molecular weights (up to 900.000 g/mol) and with few branchings.