Tricarbonylchromium(0) complexes of 1,3,5-triphenylbenzene: an X-ray crystallographic and high field NMR spectroscopic study
作者:Bavani Mailvaganam、Brian E. McCarry、Brian G. Sayer、Richard E. Perrier、Romolo Faggiani、Michael J. McGlinchey
DOI:10.1016/0022-328x(87)87110-3
日期:1987.11
yields products in which a Cr(CO)3 moiety is bonded to the central ring or to one, two or all three peripheral phenyl rings. The structure of the TPB · 3Cr(CO)3 complex has been determined by single crystal X-ray diffraction techniques. The complex crystallizes in the space group P21/n with unit cell parameters a 8.316(2) Å, b 15.498(5) Å, c 22.254(4) Å, β 92.18(2)°, V 2865.8(11) Å3 and Z = 4. The structure
1,3,5-三苯苯(TPB)与Cr(CO)6的反应生成的产品中,Cr(CO)3部分与中心环或一个,两个或所有三个外围苯环键合。通过单晶X射线衍射技术确定了TPB·3Cr(CO)3配合物的结构。复合物在P 2 1 / n空间群中结晶,晶胞参数为a 8.316(2)Å,b 15.498(5)Å,c 22.254(4)Å,β92.18(2)°,V 2865.8(11)Å 3和Z= 4。已经通过直接和傅立叶方法求解了该结构,并通过块对角矩阵最小二乘法将其对2830个观察到的反射的R 1和R 2值分别设为0.053和0.053。该结构表明三羰基铬键合到三个外围苯基上,并且这些芳基环相对于中心环采用35°-26°和14°的二面角;这些二面角与游离配体本身的二面角非常相似。所有三个Cr(CO)3三脚架的取向都相对于芳基碳原子完全错开了几度。500 MHz 1 H和125 MHz 13这些配合物的13 C