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Ta(CNDipp) 6 : An Isocyanide Analogue of Hexacarbonyltantalum(0)
Author(s) -
Chakarawet Khetpakorn,
DavisGilbert Zachary W.,
Harstad Stephanie R.,
Young Victor G.,
Long Jeffrey R.,
Ellis John E.
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201706323
Subject(s) - homoleptic , tantalum , isocyanide , disproportionation , chemistry , metal , benzene , metal carbonyl , inorganic chemistry , photochemistry , medicinal chemistry , crystallography , organic chemistry , catalysis
Abstract Hexakis(2,6‐diisopropylphenylisocyanide)tantalum is the first isocyanide analogue of the highly unstable Ta(CO) 6 and represents the only well‐defined zerovalent tantalum complex to be prepared by conventional laboratory methods. Two prior examples of homoleptic Ta 0 complexes are known, Ta(benzene) 2 and Ta(dmpe) 3 , dmpe=1,2‐bis(dimethylphosphano)ethane, but these have only been accessed via ligand co‐condensation with tantalum vapor in a sophisticated metal‐atom reactor. Consistent with its 17‐electron nature, Ta(CNDipp) 6 undergoes facile one‐electron oxidation, reduction, or disproportionation reactions. In this sense, it qualitatively resembles V(CO) 6 , the only paramagnetic homoleptic metal carbonyl isolable under ambient conditions.