Unusual [Pt{κ<sup>2</sup>(<i>C</i>,<i>N</i>)}]<sup>+</sup> → [Pt{κ<sup>2</sup>(<i>N</i>,<i>N</i>)}]<sup>+</sup> Coordination Mode Flip of the Guanidinate(1−) Ligand in Cationic <i>N</i>,<i>N</i>′,<i>N</i>″-Tris(3,5-xylyl)guanidinatoplatinum(II) Bis(phosphine) Complexes. Syntheses, Structural and Theoretical Studies
作者:Rishabh Ujjval、Masilamani Deepa、Jisha Mary Thomas、Chinnappan Sivasankar、Natesan Thirupathi
DOI:10.1021/acs.organomet.0c00408
日期:2020.10.26
reactions of [Ptκ2(C,N)}X(S(O)Me2)] (κ2(C,N) = N,N′,N″-triarylguanidinate(1−); Ar = 2-(MeO)C6H4 (3), 2-MeC6H4 (4), 4-MeC6H4 (5), 2,4-Me2C6H3 (6), 2,5-Me2C6H3 (7), and 3,4-Me2C6H3 (8); X = Cl (3), OC(O)CF3 (4–8)) with 1,1-bis(diphenylphosphino)methane (dppm) afforded the respective cationic complexes [Ptκ2(C,N)}κ2(dppm)}][X] (10–15) in high yields. In contrast, the separate reactions of [Ptκ2(C,N)}(OC(O)CF3)(S(O)Me2)]
的分开的反应[PT κ 2(C ^,Ñ)} X(S(O)Me 2)](κ 2(C ^,Ñ)= Ñ,Ñ ',Ñ “-triarylguanidinate(1-); Ar为2 -(MeO)C 6 H 4(3),2-MeC 6 H 4(4),4-MeC 6 H 4(5),2,4-Me 2 C 6 H 3(6),2,5-我2 C 6 H 3(7)和3,4-Me 2 C 6 H 3(8);和 X =氯(3),OC(O)CF 3(4 - 8))与1,1-双(二苯基膦基)甲烷(DPPM),得到相应的阳离子络合物[PT κ 2(C ^,Ñ)} κ 2(dppm)}] [X](10 – 15)高产。与此相反,的单独的反应[铂κ 2(C ^,Ñ)}(OC(O)CF 3)(S(O)Me 2)](κ 2(C ^,Ñ)= Ñ,Ñ ',Ñ “ -三(3,5-二甲苯基)胍基(1-); 9)用DPPM和1,2-双