Atom Assignment in Solid-State Structures on the Basis of X-ray Crystallography and DFT Calculations – A Case Study on a Molecular Cu–Sb Alloy

2006 ◽  
Vol 2006 (6) ◽  
pp. 1127-1129 ◽  
Author(s):  
Reinhart Ahlrichs ◽  
Dieter Fenske ◽  
Alexander Rothenberger ◽  
Claudia Schrodt ◽  
Stephan Wieber
2007 ◽  
Vol 62 (10) ◽  
pp. 1339-1342 ◽  
Author(s):  
Surajit Jana ◽  
Tania Pape ◽  
Norbert W. Mitzel

The reaction of dimethylcadmium with alcohols R-OH in equimolar ratio leads to the formation of tetrameric methylcadmium alkoxides with molecular formula [(MeCd)4 (OR)4] [R = Me (1), Et (2) and iPr (3)]. These compounds have been characterised by 1H, 13C NMR and IR spectroscopy, by mass spectrometry, elemental analyses and by X-ray crystallography (for 2 and 3). The solid state structures show distorted cubane-type aggregates with Cd4O4 cores. The structural aspects and the spectroscopic characterisations of these compounds are discussed.


2016 ◽  
Vol 52 (66) ◽  
pp. 10144-10146 ◽  
Author(s):  
Felix Hanke ◽  
Sarah Hindley ◽  
Anthony C. Jones ◽  
Alexander Steiner

X-ray structures and DFT calculations show that the HT phase is of Me2Cd is two-dimensionally disordered, while the LT phase is ordered. Both phases contain linearly coordinated cadmium atoms; methyl groups are staggered in the HT form and eclipsed in the LT-form.


2011 ◽  
Vol 67 (a1) ◽  
pp. C816-C817
Author(s):  
R. M. Claramunt ◽  
M. Á García ◽  
M. Á Farrán ◽  
C. I. Nieto ◽  
M. C. Torralba ◽  
...  

2012 ◽  
Vol 65 (7) ◽  
pp. 883 ◽  
Author(s):  
Philip C. Andrews ◽  
Richard L. Ferrero ◽  
Peter C. Junk ◽  
Jonathan G. Maclellan ◽  
Roshani M. Peiris

Two new substituted thiobenzoic acids, m-nitrothiobenzoic and m-sulfothiobenzoic acid, and six (four new) homo- and heteroleptic bismuth(iii) compounds derived from thiobenzoic acid and substituted thiobenzoic acid have been synthesised and fully characterised using both solvent free and solvent mediated methods; Bi(SC(=O)C6H5)3 (3), PhBi(SC(=O)C6H5)2 (4), Ph2Bi(SC(=O)C6H5) (5), Bi(SC(=O)C6H4-m-NO2)3 (6), PhBi(SC(=O)C6H4-m-NO2)2 (7), and PhBi(SC(=O)C6H4-m-SO3) (8). The solid-state structures of the previously reported Bi(SC(=O)C6H5)3 (3) and PhBi(SC(=O)]C6H5)2 (4) complexes have now been confirmed by X-ray crystallography. In the solid-state complex 3 forms a column-like polymeric structure resembling stacked bowls through pyramidal intermolecular Bi–S3 bonds of distance 3.359 Å, providing a Bi(iii) centre with a nine coordinate environment. Complex 4 forms discrete tetrameric units cemented by long intermolecular Bi–S (3.774 Å), Bi–O(= C) (3.030, 3.071 Å) and Bi–C bonds (3.627 Å). The complexes were assessed for their activity against three strains of Helicobacter pylori and all show a minimum inhibitory concentration of 6.25 µg mL–1, indicating that the high level of bactericidal activity is insensitive to the degree of substitution at the Bi(iii) centre.


2012 ◽  
Vol 1008 ◽  
pp. 88-94 ◽  
Author(s):  
Carla I. Nieto ◽  
M. Ángeles García ◽  
M. Ángeles Farrán ◽  
Rosa M. Claramunt ◽  
M. Carmen Torralba ◽  
...  

2007 ◽  
Vol 80 (9) ◽  
pp. 1776-1779 ◽  
Author(s):  
Satoshi Takara ◽  
Andrei S. Batsanov ◽  
Douglas J. Schaffer ◽  
Michael Takase ◽  
Janice A. Kunishige ◽  
...  

2001 ◽  
Vol 05 (09) ◽  
pp. 702-707 ◽  
Author(s):  
LI CHEN ◽  
JESSE B. FOX ◽  
GEUN-BAE YI ◽  
MASOOD A. KHAN ◽  
GEORGE B. RICHTER-ADDO

Para-aminosubstituted nitrosoarenes react with Ru ( CO )( OEP ) or [ Co ( TPP )( THF )2] SbF 6 (OEP2- = 2,3,7,8,12,13,17,18-octaethylporphyrinato dianion, TPP2- = 5,10,15,20-tetraphenylporphyrinato dianion) to generate Ru ( OEP )( ONC 6 H 4 NMe 2)2 and [ Co ( TPP )( ONC 6 H 4 NR 2)2] SbF 6 ( R = Me , Et ), respectively, in fair to high yields. These N -bound nitrosoarene complexes have been characterized by spectroscopic methods. The complexes Ru ( OEP )( ONC 6 H 4 NMe 2)2 and [ Co ( TPP )( ONC 6 H 4 NMe 2)2] ClO 4 have also been characterized by single-crystal X-ray crystallography. Their structures represent the first reported solid-state structures of Ru and Co porphyrins containing C-nitroso ligands.


2018 ◽  
Vol 122 (17) ◽  
pp. 9339-9345 ◽  
Author(s):  
Lena V. Ivanova ◽  
Denan Wang ◽  
Sergey Lindeman ◽  
Maxim V. Ivanov ◽  
Rajendra Rathore

2001 ◽  
Vol 79 (5-6) ◽  
pp. 607-612 ◽  
Author(s):  
Man-Kit Lau ◽  
Joyce LC Chim ◽  
Wing-Tak Wong ◽  
Ian D Williams ◽  
Wa-Hung Leung

Reaction of [OsO4] with C7H7MgBr (C7H7 = 2-methylphenyl) followed by column chromatography afforded the reported osmium tetraaryl [Os(C7H7)4] along with the oxo-osmium(VI) ([OsO(C7H7)4]) (1) (13%) and the dioxo-osmium(VI) ([OsO2(C7H7)2]) (2) (25%) complexes. Treatment of [OsO4] with C8H9MgBr (C8H9 = 2,5-dimethylphenyl) gave a mixture of [Os(C8H9)4] (3) (34%) and [OsO(C8H9)4] (4) (4%) while that with C8H9OMgBr (C8H9O = 4-methoxy-2-methylphenyl) afforded [OsO(C8H9O)4] (5) in 20% yield. Oxidation of 3 with 3-chloroperoxybenzoic acid afforded 4 in good yield. The solid-state structures of 1 and 4 have been established by X-ray crystallography. Crystals of 1 are tetragonal with a = 13.080(1) and c = 6.6506(5) Å, V = 1137.9(1) Å3, Z = 2, and space group of P4/n; while those of 4 are tetragonal with a = 13.593(2) and c = 7.377(2) Å, V = 1363.0(5) Å3, Z = 4, and space group of P4/n. The geometry around osmium in both complexes is square pyramidal with the oxo ligand occupying apical position. The Os—O and Os—C distances in 1 are 1.652(2) and 2.084(1) Å, respectively, while those in 4 are 1.688(7) and 2.088(4) Å, respectively. The cyclic voltammograms of the monooxo aryl osmium(VI) compounds show reversible Os(VI/V) couple at around –1.4 V vs. ferrocene/ferrocenium couple.Key words: osmium(VI), oxo aryl complexes.


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