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Title: Structure‐Property Studies of Niobium ( N ‐Heterocyclic) Carbene Complexes
Abstract

The structures and magnetic properties of four paramagnetic bis(carbene)niobium and a diamagnetic monocarbene complex are described. Crystallographic studies show solvated crystals of NbCl4(IMes)2(1 ⋅ C7H7), NbCl3(IMes)2(2 ⋅ Et2Oand2 ⋅ C5H12), and NbOCl2(IMes)2(3 ⋅ Et2O) adopt distorted structures consistent with second‐order Jahn‐Teller carbene‐halide interactions. Magnetic studies indicate13display appreciable temperature‐independent paramagnetism contributions to theirS=1/2, 1, and 1/2 spin ground states, respectively. Slow magnetization relaxation dynamics are seen below ca. 6 and 50 K, which are ascribed as arising from Raman and direct/Raman pathways for1and3, respectively.

 
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PAR ID:
10559847
Author(s) / Creator(s):
 ;  ;  ;  
Publisher / Repository:
Wiley Blackwell (John Wiley & Sons)
Date Published:
Journal Name:
European Journal of Inorganic Chemistry
Volume:
28
Issue:
1
ISSN:
1434-1948
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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