Etude de complexes acide de Lewis–halogénure d'acide. I. Structure cristalline des hexachloroantimonate, tétrachloroaluminate et tétrachlorogallate de méthyl oxocarbonium

Abstract

The structure of the methyloxocarbonium ion was investigated in three salts: SbCI; CHACO +, AICIg-CHACO + and GaCI~-CHACO + by X-ray crystallography. Three dimensional X-ray data were collected on a diffractometer (Mo K~ radiation). The structures were solved by Patterson methods and refined by full-matrix least-squares analysis. The crystal structures provide direct proof of an ionic structure in the solid state. In each salt the methyloxocarbonium ion is linear and no association of the oxocarbonium ion with the anions other than ionic crystal packing is observed in accordance with the infrared spectrum.

Structure and Electronic Configurations of the Intermediates of Water Oxidation in Blue Ruthenium Dimer Catalysis

“…25 Peroxides similar to structure 5 are known for Pd, 46 Rh, 47 Mo, 48 Co, 49 and Fe/Cu complexes. 50 Structures similar to 4 have been found in Co, 51 Cu, 52 and Mo compounds, 53 although they all contained a second stabilizing bridge and are not structurally homologous to structure 4. For structures 4, 5, and 5′ one can expect elongation of the Ru−O bridging distance due to the formation of the peroxo bridging ligand.…”

The crystal and molecular structure of μ-carbonato-bis(tetraphenylantimony): a system containing penta- and hexacoordinated antimony

“…The sole exception is pentaphenylantimony (Wheatley, 1964;Beauchamp, Bennett & Cotton, 1968), which has a distorted square pyramidal configuration. Octahedral coordination about antimony is commonplace, for example in (C6Hs)2SbClaH20 (Polynova & Porai-Koshits, 1967), in CHaCO+SbCI~ (Le Carpentier & Weiss, 1967, 1972a, and in [C15SbOC(C1)CH;]2 (Le Carpentier & Weiss, 1972b). /z-Carbonato-bis(tetraphenylantimony) is the first system reported containing both penta-and hexacoordinated antimony.…”

Synthesis and Oxidation of a Paddlewheel‐Shaped Rhodium/Antimony Complex Featuring Pyridine‐2‐Thiolate Ligands

“…NBO/NLMO pictures were created with ChemCraft v.1.7 . The NBO calculations of the Sb reference compounds were based on the X‐ray structures reported for: [(MeC−N i Pr) 2 C−SCN] + [SbF 6 ] − , OSbPh 3 , [SbPh 4 ] + [I 3 ] − , [Me‐CO] + [SbCl 6 ] − , [PPh 4 ] + [SbBr 6 ] − , [NEt 4 ] + [Sb(C 6 H 4 S 2 ) 3 ] − , (bipy)SbF 3 , (bipy)SbCl 3 , [SbCl 5 ] 2− , [HNC 5 H 4 ] + [SbCl 4 ] − , SbPh 3 (if applicable, positions of H atoms were optimized prior to NBO analysis).…”

“…Elemental analyses were carried out on aC /H/N/S analyser "Vario Micro Cube" (Elementar). [36] The NBO calculations of the Sb reference compounds were based on the X-ray structures reported for:[ (MeCÀNiPr) 2 CÀSCN] + [SbF 6 ] À , [37] OSbPh 3 , [22b] [SbPh 4 ] + [I 3 ] À , [38] [Me-CO] + [SbCl 6 ] À , [39] [PPh 4 ] + [SbBr 6 ] À , [40] [NEt 4 ] + [Sb(C 6 H 4 S 2 ) 3 ] À , [41] (bipy)SbF 3 , [42] (bipy)SbCl 3 , [43] [SbCl 5 ] 2À , [44] [HNC 5 H 4 ] + [SbCl 4 ] À , [45] SbPh 3 [46] (if applicable, positions of Ha toms were optimized prior to NBO analysis). The samples were enclosed in PMMA containers.…”