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Cyanoalkyl Complexes of Platinum (II). I . Preparation and Spectroscopic Properties
Author(s) -
Ros Renzo,
Renaud Jacques,
Roulet Raymond
Publication year - 1975
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19750580118
Subject(s) - chemistry , isomerization , cationic polymerization , dichloromethane , platinum , oxidative addition , medicinal chemistry , catalysis , trans effect , stereochemistry , polymer chemistry , crystallography , crystal structure , organic chemistry , solvent
Abstract The oxidative addition of XRCN to PtL 4 yields cis ‐and/or trans ‐PtX(RCN)L 2 (X = Cl, Br; R = (CH 2 ) n , n = 1, 2, 3; L = PPh 3 , PPh 2 CH 3 , AsPh 3 ). L is readily displaced by more basic phosphines or by a diphosphine. In each case the trans complex is the thermodynamically more stable isomer and cis ‐ trans isomerization catalyzed by free L occurs in dichloromethane. Insertion of CO in the σ PtC bond takes place quantitatively in the case of cyanoethyl and cyanopropyl. Abstraction of X by AgBF 4 gives cis or trans cationic complexes with N‐bonded CN group.