Preparative and spectral investigations on ortho-tellurated phenols and their mercury(III), palladium(II) and platinum(II) phenoxides chelated through tellurium
作者:A.K. Singh、S. Thomas、B.L. Khandelwal
DOI:10.1016/s0277-5387(00)86169-0
日期:——
ortho -mercuration followed by trans -metallation and reduction, respectively. The ligation behaviour of 1 and 2 has been explored. Compound 1 forms a polymeric mercury(II) complex which on reaction with PPh 3 gives [(PPh 3 )HgCl( 1 -H)]. Compound 2 forms with mercury(II), palladium(II) and platinum(II) chelated phenoxides of stoichiometry [MCl( 2 -H)] 2 , which have been found to be dimeric containing
摘要由对甲酚与TeCl 4直接反应,然后还原Ar 2 TeCl,由对甲酚合成了双(2-羟基-5-甲基苯基)碲化物(1)和(2-羟基-5-甲基苯基)芳基碲化物(2)。 2型化合物和邻位汞化,然后分别进行反金属化和还原。已经探讨了1和2的连接行为。化合物1形成聚合的汞(II)配合物,其与PPh 3反应得到[(PPh 3)HgCl(1-H)]。化合物2与化学计量为[MCl(2-H)] 2的汞(II),钯(II)和铂(II)螯合的酚盐形成,已发现它们是含氯桥的二聚体。1和2的1 H和13 C NMR和IR光谱具有特征性。电子光谱支持围绕钯(II)/铂(II)的正方形平面几何形状。金属配合物的红外光谱和1 H NMR谱图表明1在[(PPh 3)HgCl(1-H)]中通过氧气和碲配位为单负双齿配体。在其所有金属络合物中发现2的行为相似。