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Synthesis, Characterization, and Reactivity of a d2, Mo(IV) Complex Supported by a New OCO−Trianionic Pincer Ligand

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posted on 30.01.2008, 00:00 by Soumya Sarkar, Adam R. Carlson, Melanie K. Veige, Joseph M. Falkowski, Khalil A. Abboud, Adam S. Veige
The new terphenyl pincer precursor 3,3‘ ‘-di-tert-butyl-1,1‘:3‘,1‘ ‘-terphenyl-2,2‘ ‘-diol (1) is examined for its ability to support early transition metals as a trianionic ligand. Metalation proceeds smoothly at −35 °C with Mo(NMe2)4 to provide the Mo(IV), d2 amido−amine complex [3,3‘ ‘-di-tert-butyl-2,2‘ ‘-di(hydroxy-κO)-1,1‘:3‘,1‘ ‘-terphenyl-2‘-yl-κC2‘](N-methylmethanaminato)bis(N-methylmethanamine)molybdenum(IV), abbreviated as [tBuOCO]Mo(NMe2)(NHMe2)2, (2).

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