| Synthesis and Crystal Structure of an Indenylnickel(II) NHC Complex (Ind)NiBr(1,3-bisbenzylimidazol-2-ylidene) |
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| 作者姓名： | HU Dong-Mei a SUN Hong-Mei a WANG Yong-Sheng a SHEN Qia② XUE Feng b a |
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| 作者单位： | HU Dong-Mei a SUN Hong-Mei a WANG Yong-Sheng a SHEN Qia② XUE Feng b a (The Key Lab of Organic Synthesis of Jiangsu Province，College of Chemistry and Chemical Engineering，Suzhou University，Suzhou 215123，China) b (Department of Chemistry，The National University of Singapore，Singapore 117543，Republic of Sinapore) |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China (No. 20272040) and the Key Lab. of Organic Synthesis of Jiangsu Province |
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| 摘 要： | 1 INTRODUCTION During the past few decades, indene and its substituted derivatives (Ind) are of special interest in Group IVB complexes owing to their easy coordina- tion modification by substitution1～7]. The Ind li- gands can be tuned spontaneously to coordinate to the center metal from η1 to η5 via relatively facile “ring slippage”, thus leading to better stabilization of transition states or reaction intermediates8]. How- ever, their applications in Group 10 metal complexes ha…
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Synthesis and Crystal Structure of an Indenylnickel(II) NHC Complex (Ind)NiBr(1,3-bisbenzylimidazol-2-ylidene) |
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| Abstract: | 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-benzyl- imidazolium bromide in THF/CH2Cl2 at 45 °C, supported by elemental analysis, NMR spec- troscopy 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) , α = 102.21(3), β = 93.44(3), γ = 90.81(3)°, V = 1129.7(4) 3, Z = 2, Mr = 502.08, Dc = 1.476 g/cm3, F(000) = 512, μ = 2.642 mm-1, R = 0.0490 and 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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| Keywords: | nickel complex indenyl ligand N-heterocyclic carbene |
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