Rw value of 0.043. The naphthalene ligand in 3 is nearly planar and parallel to the approximately eclipsed benzene ring. Metal atom-ring distances are 1.631(9) and 1.611(4) Å for naphthalene and benzene, respectively. Catalyzed and uncatalyzed naphthalene exchanges in the sandwich complex are compared to the analogous reactions with the Cr(CO)3 complex 2. Naphthalene exchange in 2 in benzene is 103
二η 6 -naphthalenechromium(0)(1)反应在150℃下用苯,得到(η 6 -
萘)(η 6 -苯)
铬(0)(3产率)在76%。在THF的存在下,1在80°C进行路易斯碱催化的
芳烃交换。的反应1与取代的
芳烃得到混合夹心复合物4和6-10(
芳烃= 1,4-C 6 H ^ 4我2,1,3,5--C 6 H ^ 3我3,C 6我6,1, 4-C 6 H 4(OMe)2,1,4-C 6 H ^ 4 ˚F 2和1,4-C 10 H ^ 6我2)。除一种情况外(在
1,4-二甲基萘中),观察到单个
萘配体的交换。与1的不稳定性形成鲜明对比的是,对亚甲基二
甲苯铬(0)(5)而言,对于
芳烃在高达240°C的苯中的置换都是惰性的。3的分子结构已经通过X射线晶体学确定。晶体数据如下:一个7.784(1),b 13.411(2),Ç 22.772(5),Ž = 8,空间群PBCA。结构精制到R w值为0