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http://hdl.handle.net/11701/2056
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Поле DC | Значение | Язык |
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dc.contributor.author | Serebryanskaya, Tatiyana V. | - |
dc.contributor.author | Novikov, Alexander S. | - |
dc.contributor.author | Gushchin, Pavel V. | - |
dc.contributor.author | Zolotarev, Andrey A. | - |
dc.contributor.author | Gurzhiy, Vladislav V. | - |
dc.contributor.author | Kukushkin, Vadim Yu. | - |
dc.date.accessioned | 2016-04-11T15:00:58Z | - |
dc.date.available | 2016-04-11T15:00:58Z | - |
dc.date.issued | 2015-04-07 | - |
dc.identifier.issn | 1477-9226 | - |
dc.identifier.other | 10.1039/c4dt03870c | - |
dc.identifier.uri | http://hdl.handle.net/11701/2056 | - |
dc.description.abstract | One of two PtIV-activated propanenitriles in trans-[PtCl4(EtCN)2] is involved in platinum(IV)-mediated nitrile–imine coupling with the platinum(II)-based metallacycles [PtCl2{NHvC(NR2)N(Ph)C(vNH)N(Ph)- C(NR2)vNH}] [R2 = Me2 (1a), C5H10 (1b)] yielding diplatinum products, whose structures depend on molar ratios between the reactants. At a 1 : 1 ratio, the mixed-valence platinum(II)/platinum(IV) species [PtCl4{NHvC(NR2)N(Ph)C{v[(N(Et)CvNH)PtCl2(EtCN)]}N(Ph)C(NR2)vNH}] [R2 = Me2 (2a), (CH2)5 (2b)] were generated, whereas at a 1 : 2 ratio the dinuclear platinum(II)/platinum(II) complexes [PtCl2{NHv C(NR2)N(Ph)C{v[(N(Et)CvNH)PtCl2(EtCN)]}N(Ph)C(NR2)vNH}] [R2 = Me2 (3a), (CH2)5 (3b)] were obtained. In contrast to the nitrile–imine coupling observed for the platinum(IV) dinitrile complex, the reaction between the platinum(II) congener trans-[PtCl2(EtCN)2] and any one of 1a,b gives exclusively the substituted dimetallic platinum(II)/platinum(II) products [PtCl2{NHvC(NR2)N(Ph)C{v[(NH)PtCl2(EtCN)]}N(Ph)- C(NR2)vNH}] [R2 = Me2 (6a), (CH2)5 (6b)] featuring platinum-containing guanidine 1 as one of the ligands. Complexes 2a,b, 3a,b, and 6a,b were characterized by elemental analyses (C, H, N), HRESI-MS, IR, 1H NMR spectroscopy, and DTA/TG. The molecular and crystal structure of 2a·2CDCl3 was additionally studied by single-crystal X-ray diffraction. Complexes 2a,b undergo further redox transformation in solutions, and single crystals of [PtCl2{NHvC(NMe2)N(Ph)C{v[(N(Et)CvNH)PtCl2(MeCN)]}N(Ph)C(NMe2)v NH}]·2CH2Cl2 (3’a·2CH2Cl2) were obtained from 2a in a CH2Cl2–MeCN–C2H4Cl2 mixture and studied by X-ray crystallography. The driving forces for the generation of diplatinum products 2 and 3 were elucidated based on a quantum-chemical study. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | The Royal Society of Chemistry | en_GB |
dc.relation.ispartofseries | Dalton Transactions;44 | - |
dc.relation.ispartofseries | ;13 | - |
dc.title | Coupling of platinated triguanides with platinum-activated nitriles as a novel strategy for generation of dimetallic systems | en_GB |
dc.type | Article | en_GB |
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