Platinum(iv)-mediated nucleophilic addition of 1,3-diphenylguanidine to propiononitrile

The reaction of the trans -[PtCl 4 (EtCN) 2 ] complex with diphenylguanidine (DPG) in a molar ratio of 1: 2 proceeds via the nucleophilic addition of DPG to coordinated nitrile and the coordination of DPG to the metal center to form the [PtCl 4 {NH=C(NHPh) 2 }{NH=C(Et)-N=C(NHPh) 2 }] complex with th...

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Bibliographic Details
Published in:Russian chemical bulletin 2008-10, Vol.57 (10), p.2125-2131
Main Authors: Gushchin, P. V., Haukka, M., Bokach, N. A., Kukushkin, V. Yu
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
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Inorganic Chemistry
Organic Chemistry
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Summary:The reaction of the trans -[PtCl 4 (EtCN) 2 ] complex with diphenylguanidine (DPG) in a molar ratio of 1: 2 proceeds via the nucleophilic addition of DPG to coordinated nitrile and the coordination of DPG to the metal center to form the [PtCl 4 {NH=C(NHPh) 2 }{NH=C(Et)-N=C(NHPh) 2 }] complex with the open-chain 1,3,5-triazapentadiene ligand. The latter undergoes chelation in solution (84 h, 50 °C, CDCl 3 ), and the ring closure is accompanied by the replacement of the coordinated chloride and the formation of the cationic complex [PtCl 3 {NH=C(NHPh) 2 }{NH=C(Et)NHC(NHPh)=NPh}](Cl). The reaction of the trans -[PtCl 4 (EtCN) 2 ] complex with DPG in a molar ratio of 1: 4 affords the [PtCl 3 {NH=C-(NHPh) 2 }{NH=C(Et)NC(NHPh)=NPh}] complex with the chelating 1,3,5-triazapentadienate ligand.
ISSN:1066-5285
1573-9171
DOI:10.1007/s11172-008-0288-0