bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis, Crystal Structure Determination and Fe/Rh Site Preference in the New Ternary Boride FeRh6B3
Authors: Fokwa Boniface P. T. , Dronskowski Richard 
Published: August 2005

AbstractSingle crystals of FeRh6B3 were synthesized by arc‐melting the elements in a water‐cooled copper crucible under an argon atmosphere. The new silver‐like compound, structurally characterized by single‐crystal X‐ray analysis, crystallizes in the hexagonal Th7Fe3 structure type (space group P63mc, no. 186, Z = 2; a = 7.4135(6) Å, c = 4.7168(6) Å, R1 = 0.040, wR2 = 0.083 for all 376 reflections and 21 parameters). The structure consists of layers of boron‐centered trigonal prisms of rhodium/iron atoms and one‐dimensional strings of face‐sharing octahedral Rh6 clusters.
Synthesis, Characterization and Crystal Structure of the Dimeric Silver(I) Complex containing 4‐Amino‐5‐methyl‐2H‐1,2,4‐triazole‐3(4H)‐thione
Authors: Sharafi Tahereh , Heravi Majid M. , Ghassemzadeh Mitra , Neumüller Bernhard 
Published: August 2005

AbstractThe reaction of 4‐amino‐5‐methyl‐2H‐1,2,4‐triazole‐3(4H)‐thione (AMTT, 1) with AgNO3 and triphenylphosphane in a molar ratio 1:1:2 in ethanol led to the dimeric complex {[Ag(AMTT)(PPh3)2]NO3}2·4EtOH (2). 2 was characterized by elemental analyses, IR, 31P NMR spectroscopy as well as single crystal X‐ray diffraction. Crystal data for 2 at −80 °C: space group ${\rm P}{\bar 1}$ with a = 1265.5(2), b = 1300.9(2), c = 1509.5(2) pm, α = 83.77(2)°, β = 79.22(2)°, γ = 62.89(2)°, Z = 2, R1 = 0.0330.
Die Schichtstruktur von Cyamelurchlorid C6N7Cl3
Authors: Tragl Sonja , Meyer H.‐Jürgen 
Published: August 2005

AbstractThe Layer Structure of Cyameluric Chloride C6N7Cl3A solid state reaction of cyanuric chloride (trichloro‐s‐triazine C3N3Cl3) with sodium dicyanamide (NaN(CN)2) yielded some yellow, plate‐like crystals of cyameluric chloride (trichloro‐s‐heptazine C6N7Cl3). The crystal structure was determined by single crystal X‐ray diffraction at 220 K and was solved in the monoclinic space group C 2/c (no. 15) with Z = 24, a = 2319.4(4) pm, b = 1348.8(1) pm, c = 2063.4(3) pm, β = 118.38(2)° and V = 5.680(1) nm3. In the structure, the molecules of C6N7Cl3 are forming layers parallel to the ab‐plane, which are separated from each other by a gap of approximately 300 pm. In each of these layers, the molecules seem to be arranged around pseudo‐threefold axes, showing an almost trigonal structure pattern.
Metallkomplexe mit biologisch wichtigen Liganden. CLVII [1] Halbsandwich‐Komplexe mit Isocyanoacetylaminosäureestern und Isocyanoacetyldi‐ und tripeptidestern („Isocyano‐Peptide”︁)
Authors: Lang Markus A. , Beck Wolfgang 
Published: August 2005

AbstractMetal Complexes of Biologically Important Ligands, CLVII [1] Halfsandwich Complexes of Isocyanoacetylamino acid esters and of Isocyanoacetyldi‐ and tripeptide esters („Isocyanopeptides”︁)N‐Isocyanoacetyl‐amino acid esters CNCH2C(O) NHCH(R)CO2CH3 (R = CH3, CH(CH3)2, CH2CH(CH3)2, CH2C6H5) and N‐isocyanoacetyl‐di‐ and tripeptide esters CNCH2C(O)NHCH(R1)C(O)NHCH(R2)CO2C2H5 and CNCH2C(O)NHCH(R1)C(O)NHCH (R2)C(O)NHCH(R3)CO2CH3 (R1 = R2 = R3 = CH2C6H5, R2 = H, CH2C6H5) are available by condensation of potassium isocyanoacetate with amino acid esters or peptide esters. These isocyanides form with chloro‐bridged complexes [(arene)M(Cl)(μ‐Cl)]2 (arene = Cp*, p‐cymene, M = Ir, Rh, Ru) in the presence of Ag[BF4] or Ag[CF3SO3] the cationic halfsandwich complexes [(arene)M(isocyanide)3]+X− (X = BF4, CF3SO3).
Synthesis and Characterization of Three Homoleptic Bismuth Silanolates: [Bi(OSiR3)3] (R = Me, Et, iPr)
Authors: Paalasmaa Sanna , Mansfeld Dirk , Schürmann Markus , Mehring Michael 
Published: August 2005

AbstractThe bismuth tris(triorganosilanolates) [Bi(OSiR3)3] (1, R = Me; 2, R = Et; 3, R = iPr) were prepared by reaction of R3SiOH with [Bi(OtBu)3]. Compound 1 crystallizes in the triclinic space group $P{\bar 1}$ with Z = 2 and the lattice constants a = 10.323(1) Å, b = 13.805(1) Å, c = 21.096(1) Å and α = 91.871(4)°, β = 94.639(3)°, γ = 110.802(3)°. In the solid state compound 1 is a trimer as result of weak intermolecular bismuth‐oxygen interactions with Bi–O distances in the range 2.686(6)–3.227(3) Å. The coordination at the bismuth atoms Bi(1) and Bi(3) is best described as 3 + 2 coordination whereas Bi(2) shows a 3 + 3 coordination. The intramolecular Bi–O distances fall in the range 2.041(3)–2.119(3) Å. Compound 3 crystallizes in the orthorhombic space group Pbcm with Z = 4 and the lattice constants a = 7.201(1) Å, b = 23.367(5) Å and c = 20.893(1) Å, whereas the triethylsilyl‐derivative 2 is liquid. In contrast to [Bi(OSiMe3)3] (1) compound 3 is monomeric in the solid state, but shows similar intramolecular Bi–O distances in the range 1.998(2)–2.065(5) Å. The bismuth silanolates are highly soluble in common organic solvents and strongly moisture sensitive. Compound 1 shows the lowest thermal stability.
Synthesis, Crystal Structure and Spectrothermal Analysis of mer–Triaquanicotinamide‐orotato Cobalt(II) Trihydrate
Authors: Yeşilel Okan Zafer , Tezcan Fatma , Ölmez Halis , Paşaog;ablu Hümeyra , Büyükgüngör Orhan 
Published: August 2005

AbstractThe mixed–ligand orotato (HOr)2− complex of cobalt(II) with nicotinamide (NA) [Co(HOr)(H2O)3(NA)]·3H2O was synthesized and characterized by elemental analysis, magnetic susceptibility, conductivity, spectral methods (UV–Vis and FT–IR), simultaneous TG, DTG, DTA techniques and X–ray diffraction. The complex crystallizes in the triclinic space group P–1 with unit cell parameters a = 9.320(5), b = 9.493(5), c = 10.381(5) Å, α = 77.003(5), β = 78.852(5), γ = 80.987(5)° and Z = 2. The crystal structure has indicated that the complex has been slightly distorted octahedral geometry and is chelated by the deprotonated N(3) pyrimidine ring and by the carboxylate oxygen atom of the orotate ligand. One nicotinamide molecule is also coordinated to the metal ion by the N atom of the pyridine ring. The crystal structure consists of discrete monomeric units of the complex, which are bridged via hydrogen bonding.
The Polycationic Main Group Element Clusters (As3S5)+ and (As3Se4)+ – Syntheses from Chloroaluminate Melts, Crystal Structures, and Vibrational Spectra
Authors: Beck Johannes , Schlüter Stefan , Zotov Nicolay 
Published: August 2005

AbstractThe reaction of arsenic, arsenic trichloride and AlCl3 with sulfur or selenium, respectively, in closed glass ampoules at 80 °C leads to melts from which on slow cooling to 50 °C (As3S5)[AlCl4] and (As3Se4)[AlCl4] can be obtained in the form of yellow and red crystals. The crystal structures ((As3S5)[AlCl4]: monoclinic, P21/m, a = 640.48(4), b = 977.54(7), c = 1146.39(8) pm, β = 104.003(3)°; (As3Se4)[AlCl4]: monoclinic, C2/c,a = 2080.57(2), b = 1251.41(1), c = 1367.68(1) pm, β = 127.969(1)°) consist of nearly regular tetrahedral [AlCl4]− ions and of arsenic‐chalcogen polycations. The structures of the cations can be derived from As3E tetrahedra (E = S, Se) with three edges bridged by Se atoms for (As3Se4)+ and with four edges bridged by S atoms for the CS symmetric (As3S5)+. In both structures the ions are arranged in the motif of the CsCl structure type. Infrared und Raman spectra of both compounds show the vibration modes of both kinds of ions in the region 50 – 500 cm−1. Symmetry analysis and normal mode calculations of the vibrational spectra of (As3Se4)[AlCl4] confirm the presence of the (As3Se4) clusters and the [AlCl4] groups.
Strukturen von polaren Bariumorganylen: Synthese und Struktur von Pyridinund Kronenether‐Addukten des Bis(indenyl)bariums
Authors: Fichtel Kai , Behrens Ulrich 
Published: August 2005

AbstractStructures of Polar Barium Organyls: Synthesis and Structure of Pyridine and Crown Ether Adducts of Bis(indenyl)bariumThe synthesis and structure of five Bis(indenyl)barium complexes is reported. Bis(indenyl)barium (2) was synthesized from barium bis(hexamethyldisilazide) and indene, a pyridine complex (3) by crystallizing 2 from pyridine (X‐ray structure determined). Crown ether complexes (5 ‐ 8) of Bis(indenyl)barium were synthesized by reacting 2 with the crown ethers 18‐crown‐6, benzo‐18‐crown‐6, dibenzo‐18‐crown‐6 und benzo‐15‐crown‐5. From pyridine as solvent the following five compounds could be obtained in single crystals: [Ba(C9H7)(18‐crown‐6)(pyridine)]+[C9H7]−·pyridine ‐(5a), [Ba{C9H6(CH2CH2O)5C6H4O}]2·4pyridine (6a), [Ba(C9H7)(dibenzo‐18‐crown‐6)(pyridine)]+[C9H7]−·0.5dibenzo‐18crown‐6·0.65pyridine (7a), and [Ba(benzo‐crown‐5)2]2+ [Ba(C9H7)3(pyridine)]−2 (8a). The structures of 5a, 6a, 7a, and 8a could be determined by X‐ray diffraction. The complexes 5a and 7a have a salt‐like structure with a complex [Ba(C9H7)(18‐crown‐6)(pyridine)]+‐cation and a free indenide anion; complex 6a is a complicated dimeric indenylidene‐phenolato‐barium complex, compound 8a has a sandwich‐like [Ba(Benzo‐15‐Krone‐5)2]2+cation and a barate anion [Ba(C9H7)3(pyridine)]−.
Über Oxotantalate der Lanthanide des Formeltyps MTaO4 (M = La – Nd, Sm – Lu)
Authors: Hartenbach Ingo , Lissner Falk , Nikelski Tanja , Meier Steffen F. , Müller‐Bunz Helge , Schleid Thomas 
Published: August 2005

AbstractAbout Lanthanide Oxotantalates with the Formula MTaO4 (M = La – Nd, Sm – Lu)Besides being a by‐product of solid state syntheses in tantalum ampoules the lanthanide(III) oxotantalates of the formula MTaO4 can be easily prepared by sintering lanthanide sesquioxide M2O3 and tantalum(V) oxide Ta2O5 with sodium chloride as flux. Under these conditions two structure types emerge depending upon the M3+ cationic radius. For M = La – Pr the MTaO4‐type tantalates crystallize in the space group P21/c with lattice constants of a = 762(±1), b = 553(±4), c = 777(±4) pm, β = 101(±1)° and four formula units per unit cell. With M = Nd, Sm – Lu, the monoclinic cell dimensions (space group P2/c) shrink to the lattice constants like a = 516(±9), b = 551(±9), c = 534(±9) pm, β = 96.5(±0.3)° and there are only two formula units present. Both structures show a coordination sphere of eight oxygen atoms for the lanthanide trications shaped as distorted square antiprism for the structure with the larger lanthanides (in the following referred to as A‐type) and as trigonal dodecahedron for the structure with the smaller ones (called as B‐type in the following). The coordination environment about the Ta5+ cations can be described as a slightly distorted octahedron (CN = 6) for the A‐type structure of MTaO4 and a heavily distorted one (CN = 6) for the B‐type. The difference between the two types results from the interconnection of these [TaO6]7− octahedra. Whereas they are connected via four vertices to form corrugated layers according to $^{2}_{\infty}\rm[TaO^{v}_{4/2}O^{t}_{2/2}]^{3-}$ parallel the bc‐plane in the A‐type, the octahedra of the B‐type MTaO4 structure share edges to built up zig‐zag chains $^{1}_{\infty}\rm[TaO^{e}_{4/2}O^{t}_{2/2}]^{3-}$ along the c axis.
Synthesis and Structural Analysis of ϵ‐Fe2O3
Authors: Kelm Klemens , Mader Werner 
Published: August 2005

AbstractPowder material of ϵ‐Fe2O3 was obtained by thermal decomposition of the clay mineral nontronite and subsequent isolation of the ferric oxide by leaching the silicate phases. Additionally, crystals of ϵ‐Fe2O3 were grown as precipitates by internal oxidation of a Pd96Fe4 alloy. Analysis of the precipitate crystals by electron diffraction yields an orthorhombic crystal system and space group Pna21 ab initio. X‐ray diffraction data of the powder containing small amounts of Al substituting Fe were refined by the Rietveld method. The refinement yields lattice parameters a = 507.15 pm, b = 873.59 pm and c = 941.78 pm, and atom positions. ϵ‐Fe2O3 is isostructural with κ‐Al2O3, AlFeO3, and GaFeO3 having an anion stacking sequence /ABAC/, and 1/4 of the cations in tetrahedral co‐ordination. Some strongly distorted FeO6 octahedrons with one large Fe‐O distance, which may be considered as a 5+1 co‐ordination, appear to be characteristic for ϵ‐Fe2O3. The structure shows elements known from silicates and oxyhydroxides of iron, respectively.
Prospectively Randomized Trial Using Perioperative Low‐dose Octreotide to Prevent Organ‐related and General Complications after Pancreatic Surgery and Pancreatico‐jejunostomy
Authors: Hesse Uwe J. , De Decker Christophe , Houtmeyers Philippe , Demetter Pieter , Ceelen Wim , Pattyn Piet , Troisi Roberto , de Hemptinne Bernard 
Published: August 2005

AbstractThe aim of the present study was to evaluate the influence of low‐dose perioperative octreotide on the prevention of complications (pancreatic fistula and general complications) in patients undergoing pancreatic surgery followed by pancreaticojejunostomy. A total of 105 patients were randomized to receive either octreotide 0.1 mg subcutaneously 3 times/day for a total of 7 days or no octreotide. The primary endpoints were the occurence of a pancreatic fistula and or general complications, including extended length of hospital stay. There were 25 surgical draining procedures performed and 80 duodenopancreatectomies with or without preservation of the pylorus. In all, 25 (23.8%) of the patients were treated for chronic pancreatitis, 8 (7.6%) for benign tumoral disease, and 72 (68.6%) for carcinoma. All patients underwent pancreaticojejunostomy.
One‐stage Liver Resection for Spontaneous Rupture of Hepatocellular Carcinoma
Authors: Hai Liu , Yong‐Hong Peng , Yong Fu , Ren‐Feng Li 
Published: August 2005

AbstractThe objective of this study was to evaluate the rationale of a policy of one‐stage liver resection for selective cases of spontaneous rupture of hepatocellular carcinoma (HCC). Altogether, 36 patients with spontaneous rupture of an HCC admitted between November 1994 and September 2003 underwent a one‐stage laparotomy with a view to curative liver resection; 33 cases underwent liver resection successfully, and 3 cases were found to have lesions unresectable at laparotomy and were treated with other hemostatic procedures. The prognostic value was calculated by Kaplan‐Meier survival curve analysis. Effective surgical hemostasis was achieved in all patients, with a postoperative mortality rate of 5.8% (2/36). The estimated survivals at 1, 3, and 5 years for patients who underwent liver resection were 88%, 54%, and 51%, respectively. These results suggest that a one‐stage surgical operation offers a feasible, effective treatment for patients with ruptured HCC in whom the tumor is judged likely to be resectable on the computed tomography scan and who have a liver function grade of A or B according to Child‐Pugh criteria.
Outcome and Survival of Patients Aged 65 Years and Younger after Abdominal Aortic Aneurysm Rupture
Authors: Tambyraja Andrew L. , Murie John A. , Chalmers Roderick T.A. 
Published: August 2005

AbstractAdvanced age (> 80 years) confers a survival disadvantage after operative repair of a ruptured abdominal aortic aneurysm (AAA). This study aimed to determine if young age (≤65 years) confers a survival benefit. Consecutive patients undergoing attempted repair of a ruptured AAA between 1995 and 2001 were included in the study. Demographic, clinical, and operative factors were analyzed together with in‐hospital mortality, duration of postoperative hospital stay, and long‐term survival. Of 378 patients admitted with a ruptured AAA, 52 (14%) were ≤ 65 years of age and 326 (86%) were > 65 years. There were 4 (8%) women in the younger cohort compared to 74 (23%) women in the older group (p = 0.015). Four (8%) patients in the younger group were thought to be unsuitable for surgical repair compared to 77 (24%) patients in the older cohort (p = 0.009). Of the 48 younger patients who underwent attempted operative repair, 22 (46%) died in hospital, compared to 108 (43%) of 249 patients > 65 years (p = 0.753). The median (range) postoperative hospital stay of survivors was 11 days (6–59 days) in the younger cohort and 15 days (6–121 days) in the older group (p = 0.005). Patients ≤ 65 years of age undergoing operative repair of ruptured AAA have no survival advantage over older patients. These data support AAA screening for the “at risk” and age‐defined population.
Prostatic Capsule‐ and Nerve‐sparing Cystectomy in Organ‐confined Bladder Cancer: Preliminary Results
Authors: Martis Gianni , D’Elia Gianluca , Diana Massimo , Ombres Maurizio , Mastrangeli Bruno 
Published: August 2005

AbstractWe present a novel radical cystectomy technique that allows bladder cancer control while maintaining urinary continence and reducing the risk of erectile dysfunction by sparing the prostatic capsule and the neurovascular bundles. Between September 1997 and December 2002, 85 men were candidates for cystectomy; 32 were selected for a prostatic capsule‐ and seminal‐sparing cystectomy with orthotopic urinary diversion. All patients had clinical organ‐confined bladder cancer (cT1 to cT3a). One patient died of unrelated causes. Of the remaining 31 patients, two with pT4, N+ disease underwent three cycles of adjuvant chemotherapy and are free of disease at 10 and 12 months postoperatively. Twenty‐nine patients with organ‐confined bladder cancer are free of disease after a mean follow‐up of 32 months. At 24 months, 98% of the patients are completely continent during the day and 83% during the nighttime hours. In addition, 80% of the patients are able to complete sexual intercourse without auxiliary measures at a mean of 24 months postoperatively. Prostatic capsule‐ and nerve‐sparing cystectomy permits en bloc removal of the bladder, of the adenomatous prostatic tissue, and of the seminal vesicles, thereby achieving local cancer control and preserving erectile function and urinary continence.
Measuring Surgical Quality: What’s the Role of Provider Volume?
Authors: Dimick Justin B. , Birkmeyer John D. , Upchurch Gilbert R. 
Published: August 2005

AbstractAlthough not ideal for all situations, provider volume is particularly suited for measuring surgical quality in certain contexts. Specifically, we believe that for uncommon operations with a strong volumes–outcome effect, provider volume may be the most informative performance measure. Because of the relative ease of determining provider volume, it will continue to be used in value‐based purchasing and public reporting efforts. With increasing momentum from outside the profession of surgery, it is particularly important for surgeons to participate in making decisions regarding situations where volume may be an appropriate measure of quality.
Brief report: An examination of the relationships between parental monitoring, self‐esteem and delinquency among Mexican American male adolescents
Authors: Caldwell Roslyn M. , Beutler Larry E. , An Ross Sylvia , Clayton Silver N. 
Published: August 2005

AbstractThe present study examined relationships between parental monitoring (mother and father), self‐esteem, and delinquency among 95 adjudicated Mexican American male adolescents who were on probationary status with the juvenile justice system. Consistent with previous literature pertaining to familial processes and delinquency among the general adolescent population, findings from the current study revealed that parental monitoring was negatively associated with delinquency. In addition, self‐esteem was shown to be positively correlated with delinquency. These results highlight the generalizability of previous research related to familial, emotional, and behavioral processes among Mexican American male adolescents.
Community service for youth: The value of psychological engagement over number of hours spent
Authors: McGuire Jenifer K. , Gamble Wendy C. 
Published: August 2005

ABSTRACTThis study examined the relative contribution of psychological engagement with a service activity and number of hours spent in that activity as predictors of change over time in community belonging and social responsibility. Sixty‐eight primarily rural adolescents participated as teen leaders in a sexuality education program, and completed assessments of social responsibility and community belonging before and after program participation. Psychological engagement with the service activity and number of hours spent were used to predict changes in social responsibility and community belonging, while controlling for gender, prior program participation, and sexual behaviour history. Psychological engagement, but not number of hours spent, accounted for significant unique variability of change in community belonging and social responsibility.
Riemann-Roch-Hirzebruch integral formula for characters of reductive Lie groups
Authors: Libine Matvei 
Published: August 2005

Let

G

R

G_{\mathbb R}

be a real reductive Lie group acting on a manifold

M
M

. M. Kashiwara and W. Schmid constructed representations of

G

R

G_{\mathbb R}

using sheaves and quasi-

G

R

G_{\mathbb R}

-equivariant

D

{\mathcal D}

-modules on

M
M

. In this article we prove an integral character formula for these representations (Theorem 1). Our main tools will be the integral localization formula recently proved by the author and the integral character formula proved by W. Schmid and K. Vilonen (originally established by W. Rossmann) in the important special case when the manifold

M
M

is the flag variety of

C

⊗

R

g

R

\mathbb C \otimes _{\mathbb R} \mathfrak {g}_{\mathbb R}

—the complexified Lie algebra of

G

R

G_{\mathbb R}

. In the special case when

G

R

G_{\mathbb R}

is commutative and the

D

{\mathcal D}

-module is the sheaf of sections of a

G

R

G_{\mathbb R}

-equivariant line bundle over

M
M

this integral character formula will reduce to the classical Riemann-Roch-Hirzebruch formula. As an illustration we give a concrete example on the enhanced flag variety.
Organization and Metabolism of Plastids and Mitochondria in Arbuscular Mycorrhizal Roots of Medicago truncatula
Authors: Lohse Swanhild , Schliemann Willibald , Ammer Christian , Kopka Joachim , Strack Dieter , Fester Thomas 
Published: August 2005

Abstract
Colonization of root cortical cells by arbuscular mycorrhizal fungi leads to marked cytological changes of plastids and mitochondria. Plastids in particular are forming tubular extensions partially connecting individual organelles in a network-like way. These cytological changes correspond to an increased need for plastid and mitochondrial products during establishment and functioning of the symbiosis. The analysis of metabolite and transcript levels in mycorrhizal and nonmycorrhizal roots from Medicago truncatula revealed concomitant changes regarding a number of metabolic pathways. Our results indicate the activation of the mitochondrial tricarboxylic acid cycle and of plastid biosynthetic pathways producing fatty acids, amino acids, and apocarotenoids. These observations provide a general overview of structural and metabolic changes of plastids and mitochondria during colonization of root cortical cells by arbuscular mycorrhizal fungi.