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[Ni 3 ( i Pr 2 Im) 3 ( µ 2 ‐CO) 3 ( µ 3 ‐CO)] – A CO‐Stabilized NHC Analogue of the Parent Neutral Nickel Chini‐Type Cluster
Author(s) -
Berthel Johannes H. J.,
KuntzeFechner Maximilian W.,
Radius Udo
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201900302
Subject(s) - chemistry , nickel , reactivity (psychology) , valence (chemistry) , crystallography , nickel compounds , cluster (spacecraft) , medicinal chemistry , stereochemistry , organic chemistry , medicine , alternative medicine , pathology , computer science , programming language
The reactivity of nickel tetracarbonyl [Ni(CO) 4 ] with the N ‐Heterocyclic Carbenes (NHCs) 1,3‐diisopropylimidazolin‐2‐ylidene ( i Pr 2 Im) and 1,3‐di( iso propyl)‐4,5‐di(methyl)imidazolin‐2‐ylidene ( i Pr 2 Im Me ) is reported. The reaction of [Ni(CO) 4 ] with two equiv. i Pr 2 Im and i Pr 2 Im Me and one equiv. i Pr 2 Im Me leads to the formation of the complexes [Ni( i Pr 2 Im) 2 (CO) 2 ] 2 , [Ni( i Pr 2 Im Me ) 2 (CO) 2 ] 3 , and [Ni( i Pr 2 Im Me )(CO) 3 ] 4 . The reaction of [Ni(CO) 4 ] with one equiv. (or less) i Pr 2 Im affords the triangular 44 VE (valence electron) cluster complex [Ni 3 ( i Pr 2 Im) 3 ( µ 2 ‐CO) 3 ( µ 3 ‐CO)] 1 , a NHC‐stabilized analogue of the parent neutral nickel Chini cluster [Ni 3 (CO) 3 ( µ 2 ‐CO) 3 ].