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1,3-Diisopropyl-4,5-dimethylimidazolium diphenylureate (4) has been obtained from 2,3- dihydro-1,3-diisopropyl-3,4-dimethylimidazol-2-ylidene (3) and N,N'-diphenylurea in good yield. The crystal structure of 4 contains dimeric ureate anions linked by unsymmetrical NHN hydrogen bonds while only weak interactions are detected between the imidazolium cations and the anions.
Received: 2002-7-30
Published Online: 2014-6-2
Published in Print: 2002-11-1
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