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Cobalt‐Assisted Condensation of 2‐Butanone Oxime and Acetone: Synthesis and X‐ray Structure of the Novel Acetaldiimine Complex [CoI 2 {((CH 3 CH 2 )(CH 3 )C=NO) 2 C(CH 3 ) 2 }]
Author(s) -
Hierso JeanCyrille,
Ellis Dianne D.,
Spek Anthony L.,
Bouwman Elisabeth,
Reedijk Jan
Publication year - 2000
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 - 10.1002/1099-0682(200012)2000:12<2459::aid-ejic2459>3.0.co;2-h
Subject(s) - chemistry , cobalt , oxime , butanone , triethyl orthoformate , acetone , iodide , infrared spectroscopy , ligand (biochemistry) , denticity , yield (engineering) , ketone , molecule , crystal structure , polymer chemistry , organic chemistry , solvent , catalysis , biochemistry , receptor , materials science , metallurgy
The synthesis of the first acetaldiimine cobalt complex and its full characterisation are reported. The nitrogen‐bonded chelate complex [CoI 2 {((CH 3 CH 2 )(CH 3 )C=NO) 2 C(CH 3 ) 2 }] is obtained in high yield from the reaction of 2‐butanone oxime with cobalt iodide dihydrate in acetone, in the presence of trimethyl orthoformate as dehydrating agent. A single‐crystal X‐ray structure determination, infrared spectroscopy and mass spectrometry analyses confirm the formation of a new ligand in situ from the addition of an acetone molecule to two oximato species. This cobalt‐mediated reaction provides an indirect proof for the existence in solution of monodentate N ‐bonded cobalt−ketoxime species.