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Zinc Dihydride and Mixed Halo Hydrides Supported by an N‐Heterocyclic Carbene
Author(s) -
Rit Arnab,
Wiegand AnnKristin,
Mukherjee Debabrata,
Spaniol Thomas P.,
Okuda Jun
Publication year - 2018
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.201701425
Subject(s) - imes , chemistry , carbene , medicinal chemistry , zinc , metathesis , iodide , hydride , inorganic chemistry , organic chemistry , metal , catalysis , polymerization , polymer
A series of zinc dihalides [(IMes)ZnX 2 ] [X = Cl ( 1a ) Br ( 1b ), I ( 1c ); IMes = 1,3‐bis(2,4,6‐trimethylphenyl)imidazolin‐2‐ylidene] is reported. The iodide 1c underwent salt metathesis with NaH as an alternative synthesis of [(IMes)ZnH 2 ] 2 ( 2 ). 2 readily reacted with ( t Bu)NCO and Ph 2 CO under Zn‐H insertion to give [(IMes)Zn( t BuNCHO‐κN) 2 ] ( 3 ) and [(IMes)Zn(OCHPh 2 ) 2 ] ( 4 ), respectively. Ph 2 S 2 and I 2 oxidized the hydride ligands in 2 to give dihydrogen and [(IMes)Zn(SPh) 2 ] ( 5 ) and 1c , respectively. A series of mixed halo hydrides [(IMes)Zn(X)(H)] 2 [X = Cl ( 6a ), Br ( 6b ), I ( 6c )] was obtained upon comproportionating 2 with 1a – c . The new compounds were fully characterized, including X‐ray crystallographic analysis of 3 and 6b .