Five-coordinated η2-adducts of (+)-(S)-3-methyl-1-pentene (SMP) and (R,S)-3-methyl-1-pentene (RSMP) of the type [PtCl2(η2-olefin)(α-di-hydrazone)] were prepared. In solution the more stable adducts are those which have the olefin presenting to Pt the face of opposite configuration to that of the chiral substituent. In the solid state the same situation is found by X-ray analysis for the adduct of SMP, while 1H NMR studies point to the conclusion that the same configuration as the chiral substituent is preferred in the solid adduct of RSMP. These observations are compared with those in previous reports on coordination of SMP on square planar Pt and stereoselective polymerization. © 1983.
Trigonal bipyramidal platinum complexes as models for ziegler-natta catalytic sites / P., Ammendola; M. R., Ciajolo; A., Panunzi; Tuzi, Angela. - In: JOURNAL OF ORGANOMETALLIC CHEMISTRY. - ISSN 0022-328X. - STAMPA. - 254:(1983), pp. 389-397.
Trigonal bipyramidal platinum complexes as models for ziegler-natta catalytic sites
TUZI, ANGELA
1983
Abstract
Five-coordinated η2-adducts of (+)-(S)-3-methyl-1-pentene (SMP) and (R,S)-3-methyl-1-pentene (RSMP) of the type [PtCl2(η2-olefin)(α-di-hydrazone)] were prepared. In solution the more stable adducts are those which have the olefin presenting to Pt the face of opposite configuration to that of the chiral substituent. In the solid state the same situation is found by X-ray analysis for the adduct of SMP, while 1H NMR studies point to the conclusion that the same configuration as the chiral substituent is preferred in the solid adduct of RSMP. These observations are compared with those in previous reports on coordination of SMP on square planar Pt and stereoselective polymerization. © 1983.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.