Synthesis and structure of (η5-C5H5)2Hf(η1-NC4H4)2 |
| |
| Authors: | Robin D Rogers R Vann Bynum Jerry L Atwood |
| |
| Institution: | (1) Department of Chemistry, Northern Illinois University, 60115 DeKalb, Illinois;(2) Department of Chemistry, The University of Alabama, 35486 University, Alabama |
| |
| Abstract: | The crystal structure of ( 5-C5H5)2Hf(1-NC4H4)2 has been determined from X-ray data measured by counter methods. The title compound is isostructural with (5-C5H5)2Zr(1-NC4H4)2, and crystallizes in the monoclinic space groupP21/c (C
2h
5
, No. 14) with unit cell constantsa=9.605(3),b=8.174(3),c=19.487(4) Å,  =90.85(3)°, andZ=4 forD
c=1.91 gcm–3. Full-matrix least-squares refinement gave a finalR value of 0.068 for 2154 independent observed reflections. The two cyclopentadienyl rings are 5-coordinated to the hafnium atom at an average Hf-C(5–) distance of 2.51(1) Å. The Hf-N-centroid ( -pyrrolyl) angles average 166°. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
