Synthesis and crystal structure of cyclopentylindene rare earth complex(C5H?9C9H6)(3)SmCl-Li+ (THF)(4)
writer：Cui, DM；Tang, T；Cheng, JH；Hu, NH；Chen, WQ；Huang, BT
keywords：cyclopentylindene,samarium,rare earth,complex
source：期刊
Issue time：2002年
Rare
earth complex (C5H9C9H6)(3)SmCl-Li+
(THF)(4)( I ) was synthesized by reacting anhydrous SmCl3 with two equivalents
of C5H9C9H6Li. From
mix-solvent of THF and hexane, red color single crystals were obtained. The
crystal belongs to a cubic system, space group P2(1)3 with unit cell parameters
a= b=c= 1. 754 0(2) nm, alpha=beta=gamma=90degrees, V=5. 396 4(11) nm(3), Z =
4. The ten-coordinated samarium atom is bonded to three cyclopentylindenyl
rings and a chlorine atom to form the anionic part of the title complex, ring
centroids and the chlorine atom form a tortured tetrahedron around samarium. In
the cationic part, lithium atom coordinates to four oxygen atoms of THF molecules
to form a normal tetrahedron. The Sm-C(within the same ring) distance varies
from 0. 268 to 0. 299 nm.