W. Lamberts, H. Lueken, B. Hessner
Nov 2, 1987
Citations
1
Influential Citations
18
Citations
Journal
Inorganica Chimica Acta
Abstract
Abstract The crystal structure of erbiumdicyclopentadienidechloride [Er(C5H5)2Cl]2 has been determined from X-ray diffraction data. The compound crystallizes in space group P21/c with a=11.056(3), b= 8.015(1), c=12.154(3) A, β=110.28(2)°, V= 1010.2(7) A3, Dc=2.189 g cm−3 and Z=2 dimers. The structure has been refined by full-matrix least- squares techniques to a conventional R factor of 0.027 for 2042 reflections (with I > 2σ(I)). In the unit cell centrosymmetric dimers of orte type exist with bridging chlorine atoms and C5H5 groups bonded in η5-fashion to the metal (mean ErC 2.59 A). The [Er(C5H5)2Cl]2-type is compared to the [Sc(C5H5)2Cl]2-type structure which is realized in several dicyclopentadienidebromides of the lanthanides.