Stereochemical nonrigidity in nine-vertex polyhedral boranes: dimethyl sulfide derivatives of nonahydrononaborate(2-)

1982 ◽  
Vol 21 (11) ◽  
pp. 4022-4026 ◽  
Author(s):  
Edward H. Wong ◽  
Michael G. Gatter ◽  
Raifah M. Kabbani
1966 ◽  
Vol 1 (5) ◽  
pp. 537-538
Author(s):  
M. V. Mukhina ◽  
I. Ya. Postovskii

2018 ◽  
Vol 73 (2) ◽  
pp. 125-147 ◽  
Author(s):  
Mark Strey ◽  
Cindy Döring ◽  
Peter G. Jones

AbstractThe reaction of (tht)AuCl (tht=tetrahydrothiophene) with KSCN leads to a mixture of gold(I) thiocyanate AuSCN and [(tht)2Au]+ [Au(SCN)2]−1. The compounds were separated and the X-ray structure of 1 confirmed as an alternating chain of anions and cations linked by aurophilic contacts. Either pure AuSCN or the mixture was used to synthesize further derivatives of AuSCN, all of which were investigated by X-ray methods. Most products were of limited stability when removed from their mother liquor. The dimethyl sulfide derivative 2 is molecular, (Me2S)AuSCN; the ammonia derivative 3 is ionic, [(NH3)2Au]+ [Au(SCN)2]−. The reaction with 2,2-bipyridyl leads (presumably by involvement of the solvent or of atmospheric moisture) to [bipy-H]+ [Au(SCN)2]−13. All other products involve amines or azaaromatics as ligands L. The primary amine tert-butylamine forms an ionic product [L2Au]+ (SCN)−4. The secondary amines piperidine and dibenzylamine lead to molecular structures LAuSCN (5 and 6), whereas pyridine-based azaaromatics lead to ionic products [L2Au]+ [Au(SCN)2]− with L=2-, 3- or 4-picoline (7–9), 2,4-, 3,4- or 3,5-lutidine (10–12). The 3,4-lutidine derivative 11 forms two polymorphs that tend to form mixed crystals. The dominant features of the crystal packing for 7–12 are short aurophilic interactions.


ChemInform ◽  
2010 ◽  
Vol 28 (44) ◽  
pp. no-no
Author(s):  
V. G. NENAJDENKO ◽  
P. V. VERTELEZKIJ ◽  
I. D. GRIDNEV ◽  
N. E. SHEVCHENKO ◽  
E. S. BALENKOVA

2002 ◽  
Vol 67 (7) ◽  
pp. 1007-1024 ◽  
Author(s):  
Heather D. Hall ◽  
Bradley D. Ulrich ◽  
Roman G. Kultyshev ◽  
Jianping Liu ◽  
Shengming Liu ◽  
...  

The reaction of Cs2[B10H10] with DMSO in acid produces the disubstituted 1,10-, 1,6-, and 2,7(8)-isomers of (Me2S)2B10H8 as well as the monosubstituted [(Me2S)B10H9]- anion. Through a modified procedure, the trisubstituted compound 1,10-(Me2S)2-2-(MeS)B10H7 was prepared and characterized. The 1,10-(Me2S)2B10H8 isomer was converted to the enantiomers 2,7-(Me2S)2B10H8 and 2,8-(Me2S)2B10H8 which were separated on a chiral column. The 1,6-(Me2S)2B10H8 isomer was converted to a mixture of 1,10-(Me2S)2B10H8 and 2,3-(Me2S)2B10H8. These polyhedral rearrangements are believed to occur through the diamond-square-diamond mechanism. The 1,6- and 1,10-(Me2S)2B10H8 isomers were reduced with alkali metal in liquid ammonia to produce the dianions [1,6-(MeS)2B10H8]2- and [1,10-(MeS)2B10H8]2-, respectively. Sodium ethanethiolate was used for the reduction of [1-(Me2S)B10H9]- and 1,10-(Me2S)2B10H8 to form [1-(MeS)B10H9]2- and [1-(MeS)-10-(Me2S)B10H8]-, respectively. The structures of 1,10-(Me2S)2B10H8, 1,6-(Me2S)2B10H8, 2,8-(Me2S)2B10H8, 2,3-(Me2S)2B10H8, 1,10-(Me2S)2-2-(MeS)B10H7, [1-(MeS)-10-(Me2S)B10H8]-, and [1,6-(MeS)2B10H8]2- were determined by single-crystal X-ray diffraction analysis.


Tetrahedron ◽  
1997 ◽  
Vol 53 (24) ◽  
pp. 8173-8180 ◽  
Author(s):  
Valentine G. Nenajdenko ◽  
Pavel V. Vertelezkij ◽  
Ilya D. Gridnev ◽  
Nikolai E. Shevchenko ◽  
Elizabeth S. Balenkova

1982 ◽  
Vol 85 (1) ◽  
pp. 257-263 ◽  
Author(s):  
A. Graja ◽  
M. Przybylski ◽  
B. Butka ◽  
R. Swietlik

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