【摘 要】
：
The complex (Ind)NiBr(1,3-bisbenzylimidazol-2-ylidene) (Ind = indenyl) 1 has been prepared in ca. 65% yield via the reaction of (Ind)2Ni with an equivalent of 1
【机 构】
：
The Key Lab of Organic Synthesis of Jiangsu Province,Department of Chemistry
论文部分内容阅读
The complex (Ind)NiBr(1,3-bisbenzylimidazol-2-ylidene) (Ind = indenyl) 1 has been prepared in ca. 65% yield via the reaction of (Ind)2Ni with an equivalent of 1,3-bis-benzylimidazolium bromide in THF/CH2Cl2 at 45 °C, supported by elemental analysis, NMR spectroscopy and X-ray crystal determination. The crystal belongs to the triclinic system, space group P1 with a = 7.072(1), b = 11.264(2), c = 14.541(3) (A), a = 102.21(3),β = 93.44(3), γ = 90.81(3)°, V= 1129.7(4)(A)3, Z = 2, Mr = 502.08, Dc. = 1.476 g/cm3, F(000) = 512,μ = 2.642 mm-1, R = 0.0490and wR = 0.1137 for 3913 observed reflections (I ＞ 2σ(I)). The center nickel atom is coordinated by a bromide ligand, a carbene carbon and three carbon atoms of the five-membered indenyl group to form either a highly distorted square pyramid or a highly distorted square plane.
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