|
|||||
|
|
New organogold(I) complexes: Synthesis, structure, and dynamic behavior of the polynuclear organogold diphenylmethane and diphenylethane derivatives |
|
| Authors: | Tat'yana V Baukova Lyudmila G Kuz'mina Natal'ya A Oleinikova Dmitrii A Lemenovskii Aleksander L Blumenfel'd |
| Institution: | aNesmeyanov Institute of Organoelement Compounds, Russian Academy of Science, Vavilov St. 28, Moscow 117813, Russia bKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Science, Leninskii pr. 31, Moscow 117907, Russia cChemistry Department, Moscow State University, Leninskie Gory, Moscow 117234, Russia |
| Abstract: | Two organogold derivatives of diphenylmethane and diphenylethane, Ph3PAu(o-C6H4)CH2(C6H4-o)AuPPh3 (1) and Ph3PAu(o-C6H4)(CH2)2(C6H4-o)AuPPh3 (2), have been synthesized by the reaction of ClAuPPh3 with Li(o-C6H4)CH2(C6H4-o)Li and Li(o-C6H4)(CH2)2(C6H4-o)Li respectively. The interaction of 1 with dppe results in the replacement of the two PPh3 groups to give a macrocyclic compound  Au bond. Compounds 1 and 2 react with one or two equivalents of Ph3PAu]BF4 to form new types of cationic complex CH2(C6H4-o)2(AuPPh3)3]BF4 (4), CH2(C6H4-o)2(AuPPh3)4](BF4)2 (5), and (CH2)2(C6H4-o)2(AuPPh3)4](BF4)2 (6). Complexes 1–6 have been characterized by X-ray diffraction studies, FAB MS, and IR as well as by 1H and 31P NMR spectroscopy. A complicated system of Au H-C agostic interactions, involving the bridging alkyl groups (—CH2— and CH2-CH2—) of diphenylmethane and diphenylethane ligands, has been found to occur in complexes 1–3 and 6. |
| Keywords: | Agostic Fluxionality Crystal structure Phenyl Gold Phosphine |
| 本文献已被 ScienceDirect 等数据库收录！ | |