Inorganica Chimica Acta p. 267 - 270 (1997)
Update date:2022-08-29
Topics:
Guedes Da Silva, M. Fátima C.
Ferreira, Cristina M. P.
Branco, Elsa M. P. R. P.
Fraústo Da Silva, Jo?o J. R.
Pombeiro, Armando J. L.
Michelin, Rino A.
Belluco, Umberto
Bertani, Roberta
Mozzon, Mirto
Bombieri, Gabriella
Benetollo, Franco
Kukushkin, Vadim Yu.
The cyanoguanidine complex cis-[Pt{NCNC(NH2)2}2(PPh3) 2] [BPh4]2, prepared by reacting cis-[PtCl2(PPh3)2] with cyanoguanidine in the presence of Na[BPh4], readily reacts with methanol to give cis-[(PPh3)2Pt{NHC(OMe)=NC(NH2)=NH}] [BPh4] containing a novel type of azametallacycle whose molecular structure is established by X-ray crystallography. Its formation involves metal-promoted nucleophilic addition of the alcohol to the cyano group of a cyanoguanidine ligand, combined with deprotonation of the guanidine unit which then chelates the Pt(II) centre.
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