Dichloride[1-(2,4,6-trimethylbenzyl)-3-(biphenyl-2-ylmethyl)-imidazolidin-2-ylidine (eta~6-hexamethylbenzene)]ruthenium

摘要

The single crystal X-ray structure of the imidazolidin ruthenium complex,C_(38)H_(46)Cl_2Ru,was determined.The complex is an orthorhombic space group Pbca with a=17.3586(32)A,b=14.4447(27)A,c=27.4325(52)A,and V=6878.466(4)A~3 with Z=8 for D_(calc)=1.357 g/cm~3.It exhibits the expected 3-legged piano stool geometry.There is one coordination bond of the ruthenium atom with the electrons of the eta~6-hexamethylbenzene,2 symmetrical Ru-Cl bonds,and one Ru-C bond involving the imidazole ring.The coordination around the ruthenium atom is 4-fold,which in this is case is pseudo-tetrahedral.