β Scribed by Atsushi Fukuoka; Yutaka Minami; Nobumasa Nakajima; Masafumi Hirano; Sanshiro Komiya
No coin nor oath required. For personal study only.
New organoplatinum-rhenium heterobimetallic complexes (organic ligand = Me (1), Et (2), CH2Ph (3), Ph (4)) with sulfur ligands have been prepared and characterized by IR, IH and 13c{1n} NMR, elemental analysis, and chemical reactions. Complex 1 was thermally more stable than related PtMeCi(cod) (5) and PtMe(SPh)(cod) (6). On the other hand, thermolysis reaction of 2 in diphenylmethane at 80Β°C afforded ethylene in a larger yield than those for PtEtCl(cod) (7) and PtEt(SPh)(cod) (8). From the estimation of electronegativity using IH NMR data, it was suggested that Pt in 2 was more electron deficient than in 7 and 8. It is thus proposed that SRe(CO) 4 units in 2 decreases the electron density at Pt, resulting in the promotion of apparent /3-H elimination to form ethylene.
π SIMILAR VOLUMES
Chiral racemic rhenium thiolate complexes [CpRe-SCH 2 CH 2 NHAc (8), SCH 2 CH 2 C(O)OH (9). A milder synthesis using hydrated sodium carbonate as a base (NO)(PPh 3 )(SR)] were obtained under either acidic or basic conditions. Thus, when [CpRe(NO)(PPh 3 )(CH 3 )] (1) was provided 8 and compounds with
cyclosilazane structures are assumed. We have now observed that partial isomerizations takeplace in thesereactions which depend strongly on the reaction conditions. The monosilylation of hexamethylcyclotrisilazane with butyllithium/trimethylchlorosilane in diglyme at temperatures between -60 and 1 6
A mononuclear precursor complex, [(CH 3 ) 2 Sn(tpdtc)] and several of its heterobimetallic derivatives of the type, [(CH 3 ) 2 Sn(tpdtc)]MCl 2 have been synthesized by the simple addition reaction of transition metal chlorides, MCl 2 ΓnH 2 O where tpdtc = tetraethylenepentamine bis(dithiocarbamate)