Reactivity of Platina-β-diketones with 1,4-Diazabuta-1,3-dienes: Synthesis and Characterization of Acylplatinum(II) Complexes with RNCMeCMeNR and RN(H)CHCHN(R)C(O)Me Ligands
作者:Armand Vyater、Christoph Wagner、Kurt Merzweiler、Dirk Steinborn
DOI:10.1021/om020173s
日期:2002.10.1
which complexes 2a,b were formed by reductive elimination of HCl and MeCHO, respectively. Reactions of the platina-β-diketone 1a with diazadiene ligands that are unsubstituted at the 2- and 3-positions, RNCHCHNR (R = n-Pr, i-Pr, c-Hex, t-Bu), afforded platinum(II) complexes of the type [Pt(COMe)ClRN(H)CHCHN(R)C(O)Me}] (4a, R = n-Pr; 4b, R = i-Pr; 4c, R = c-Hex; 4d, R = t-Bu). All complexes were characterized
双核铂-β-二酮[Pt 2 (COMe)2 H} 2(μ-Cl)2 ](1a)与2,3-二甲基取代的1,4-二氮杂丁-1,3-二烯RN CMeCMe NR(R = n -Pr,Ph),得到酰基铂(II)配合物[Pt(COMe)2 (n -Pr )N CMeCMe N(n -Pr )}](2a)和[Pt(COMe)Cl (PhN CMeCMe = NPh)](2b)。这些配合物的组成通过1 H和13确认。13 C NMR光谱法和通过单晶X射线衍射分析。在这些反应中,检测到了酰基(氢化)铂(IV)配合物[Pt(COMe)2 Cl(H)(RN CMeCMe NR)](3a,R = n -Pr; 3b,R = Ph)(1 H NMR光谱法)作为中间体,分别通过还原性去除HCl和MeCHO形成配合物2a,b。该粗铂-β二酮反应1a中与被连接在2-和3-位未取代的二氮杂二烯配体,RN CHCH NR(R