198331-08-7Relevant academic research and scientific papers
Bifunctional activation of cyanoguanidine. Synthesis and molecular structure of the azametallacycle cis-[(PPh3)2Pt{NHC(OMe)=NC(NH2)=NH}] [BPh4]
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.
, p. 267 - 270 (1997)
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.
Cationic phenyl and chloro-platinum(II) complexes with cyanamides and cyanoguanidine. X-ray structure of trans-[Pt(Ph)(NCNMe2)(PPh 3)2][BPh4]
Ferreira, Cristina M.P.,Guedes Da Silva, M. Fátima C.,Duarte, Teresa,Fraústo Da Silva, Jo?o J.R.,Pombeiro, Armando J.L.,Michelin, Rino A.,Kukushkin, Vadim Yu.
, p. 395 - 402 (2008/10/08)
The phenyl-platinum(II) organocyanamide trans-[Pt(Ph)(NCNR 2)(PPh3)2][BPh4] (R=Me 1a, Et 1b) or cyanoguanidine cis-[Pt(Ph){NCNC(NH2)2}(PPh 3)2][BPh4] (2) complexes have been prepared by treatment of cis-[PtCl2(PPh3)2] in THF with NCNR2 or NCNC(NH2)2, respectively, in the presence of Na[BPh4], whereas the cyanoguanidine chloro-complex cis-[PtCl{NCNC(NH2)2}(PPh3)2] [BF4] (3) has been obtained by using Tl[BF4] instead of Na[BPh4]. Complex 3 reacts further with cyanoguanidine, in the presence of Na[BPh4], to produce the di(cyanoguanidine) cis-[Pt{NCNC(NH2)2nf>)2][BPh 4]2 complex 5, whereas the amine complex cis-[PtCl(NH 2R′)(PPh3)2][BF4] (R′=CH2C6H4Me-4, 4) is formed on reaction of the former with NH2R′ in CH2Cl 2. The X-ray structure of 1a is also reported.
