Dinuclear Cationic Zirconium Hydrides Stabilized by the N,N-Dibenzylcyclam Ancillary Ligand

作者：Munha Rui F; Ballmann Joachim; Veiros Luis F; Patrick Brian O; Fryzuk Michael D^*; Martins Ana M

来源：Organometallics, 2012, 31(14): 4937-4940.

DOI：10.1021/om300504q

The reaction of [Bn(2)Cyclam]ZrCl2 (Bn = benzyl) with 2 equiv of KHBEt3 generates the ionic dinuclear zirconium derivative [([Bn(2)Cyclam]Zr)(2)(mu-H)(3)] [(Et3B)(2)H]. An analogous trihydride is obtained when [Bn(2)Cyclam]Zr(CH2Ph)(2) reacts with BEt3 in the presence of dihydrogen, whereas in the absence of BEt3, the bis(ortho-metalated) derivative [(C6H4CH2)(2)Cyclam]Zr is obtained. DFT calculations support the stability of a cationic dinuclear trihydride complex in comparison to the neutral dinuclear tetrahydride.

• 出版日期2012-7-23