de Meijere, ArminArminde MeijereMueller, S.S.MuellerLabahn, T.T.Labahn2018-11-072018-11-072001https://resolver.sub.uni-goettingen.de/purl?gro-2/30448The (2-ethoxy-3-dimethylaminocyclopropenylidene)pentacarbonylchromium complex 2 was prepared from dimethylaminoacetylene in 78% yield. It reacted with dimethylamine and diethylamine at room temperature to give quantitative yields of the bis(dialkylamino)cyclopropenylidene complexes 3a,b. The structural data and C-13-NMR chemical shifts of 2 and 3b show interesting differences relating to the different donor abilities of alkoxy and dialkylamino groups. (C) 2001 Elsevier Science B.V. All rights reserved.Preparation and structural features of new dialkylamino-substituted cyclopropenylidenepentacarbonylchromium complexesjournal_article10.1016/S0022-328X(00)00686-0000166744000033