417703-57-2Relevant academic research and scientific papers
A pseudo-Jahn-Teller distortion in an Mo2(μ2-O)2 ring having the shortest MoIV-MoIV double bond
Cotton, F. Albert,Daniels, Lee M.,Murillo, Carlos A.,Slaton, J. Garrett
, p. 2878 - 2879 (2002)
Four structures of edge-sharing bioctahedral compounds of the type Mo2(μ2-DArF)2(η2-L-L)2(μ2-O)2, where DArF is an anion of an N,N-diarylformamidine and L-L is a chelating acetate or DArF group, are reported here. The cores of the ring formed by the Mo2(μ2-O)2 are very similar with very short Mo-Mo distances of 2.306[2] A. These are consistent with the presence of a Mo=Mo double bond of the type σ2π2. As expected for these electronic configurations, the compounds are diamagnetic. The most striking characteristic is the distortion of the Mo2(μ2-O)2 ring where a set of two Mo-O distances are significantly shorter then the other set (by ca. 0.05 A). This D2h → C2h distortion is explained on the basis of a pseudo-Jahn-Teller effect. Copyright
