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Issue 14, 2017
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Formation of paramagnetic metallacyclobutadienes by reaction of diaminoacetylenes with molybdenum alkylidyne complexes

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Abstract

The reactions of the molybdenum alkylidyne complex [MesC[triple bond, length as m-dash]Mo{OCMe(CF3)2}3] (1) with the diaminoacetylenes R2NC[triple bond, length as m-dash]CNR2 (2, NR2 = 4-methylpiperidinyl; 3, NR2 = NEt2; Mes = 2,4,6-trimethylphenyl) afforded the metallacyclobutadiene (MCBD) complexes 4 and 5. In contrast to all other MCBD complexes, 4 and 5 are paramagnetic and best described as Mo(IV) species containing an anionic diaminodicarbene of the type [(R2N)CC(Mes)C(NR2)].

Graphical abstract: Formation of paramagnetic metallacyclobutadienes by reaction of diaminoacetylenes with molybdenum alkylidyne complexes

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Publication details

The article was received on 25 Jan 2017, accepted on 02 Mar 2017 and first published on 08 Mar 2017


Article type: Paper
DOI: 10.1039/C7DT00305F
Citation: Dalton Trans., 2017,46, 4737-4748
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    Formation of paramagnetic metallacyclobutadienes by reaction of diaminoacetylenes with molybdenum alkylidyne complexes

    Ò. Àrias, K. Brandhorst, D. Baabe, M. Freytag, P. G. Jones and M. Tamm, Dalton Trans., 2017, 46, 4737
    DOI: 10.1039/C7DT00305F

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