Synthesis and Characterization of the Bis-Cyclometalating Ligand 3,3‘,5,5‘-Tetrakis[(dimethylamino)methyl]biphenyl and Its Use in the Preparation of Bimetallic M(II), M(IV) (M = Pt, Pd), and Mixed-Valence Pt(II)−Pt(IV) Complexes <i>via</i> a Dilithio-Derivative. Crystal Structure of the Pd Dimer [ClPd{2,6-(Me<sub>2</sub>NCH<sub>2</sub>)<sub>2</sub>C<sub>6</sub>H<sub>2</sub>}]<sub>2</sub>
作者:María-Cristina Lagunas、Robert A. Gossage、Anthony L. Spek、Gerard van Koten
DOI:10.1021/om970650k
日期:1998.2.1
PtII dimer with 2 equiv of Cl2IPh. 1H NMR spectroscopic studies show that mixtures of the PtII and PtIV dimers in acetonitrile solution are in equilibrium with a mixed-valence (PtII,PtIV) species [(MeCN)PtII2,6-(Me2NCH2)2C6H2−C6H2(CH2NMe2)-2,6}PtIVCl2(NCMe)](CF3SO3)2, which, however, could not be isolated in pure form. The reaction of the PtII dimer with ≤1 equiv of Cl2IPh also gave a PtIV dimer, along
一锅合成由3,5-(Me 2 NCH 2)2 C 6 H 3 Br制备了潜在的双环金属化配体3,3',5,5'-四[(二甲基氨基)甲基]联苯涉及锂-卤素交换,过渡金属化和还原消除反应。该配体在联苯基的4和4'位置经历选择性二氢脱氢形成[Li 2 2,6-(Me 2 NCH 2)2 C 6 H 2 } 2 ] n,它是双金属配合物的多用途前体。通过双重金属转移反应。新型同双核Pt(II)和Pd(II)化合物[(MeCN)Pt 2,6-(Me 2 NCH 2)2 C 6 H 2 }-] 2(CF 3 SO 3)的合成与表征2和[CLPD 2,6-(ME 2 NCH 2)2 c ^ 6 ħ 2 } - ] 2,据报道,除了一个新的合成路线复杂[CLPT 2,6-(ME 2 NCH 2)2 C 6 H 2 } −] 2。通过单晶X射线衍射确定Pd二聚体的固态结构。将Cl 2氧化添加到后一种