(9) affords the dinuclear complex salt [Cu2η1:η1-LSi(μ2-O)SiL}2][OTf]2 (10), featuring a novel metallacyclooctane dication, selectively in a good yield. Complex 10 also exhibits a very strong interaction between the copper centers in the dication and the oxygen atoms of triflate anions in the solid state, evidenced by a Cu···O separation of only 2.141 Å. All complexes were fully characterized.
N 1杂环
氯亚甲
硅烷基L(Cl)Si:(1 ; L = PhC(N t Bu)2)与[Cu(tmeda)(CH 3 CN)] [OTf](2 ; tmeda = N,N,N ′,N′-
四甲基乙二胺,OTf = OSO 2 CF 3(
三氟甲磺酸盐))以高收率得到Cu(I)络合物[L(Cl)Si:→Cu(tmeda)] [OTf](3)。 N-杂环甲
硅烷基
铜络合物的第一个例子。同样,L(O t Bu)Si:(4 ; L = PhC(N t Bu)2)与2的反应得到[L(Ot Bu)Si:→Cu(tmeda)] [OTf](5)和L(NMe 2)Si:(6)2导致[L(NMe 2)Si:→Cu(tmeda)] [OTf ](7)。配合物3在
三氟甲磺酸根阴离子的O原子和三坐标Cu(I)中心之间以Cu··O距离为2.312Å在固态中表现出相当强的相互作用。相比之下,配合物7仅具有弱相互作用(约3.2