[(N-Lithio-N-Mesitylsulfonyloxy-Tert-Butylcarbamate)(2)Center-Dot(Thf)(3 )] - Crystal-Structure Of A Nitrenoid
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH(1994)
Abstract
The NO bond in 1 lengthens by roughly 6 pm when the neutral compound (X = H) is N-lithiated (X = Li). This key result of the first crystal structure analysis of a nitrenoid explains the facile replacement of the OR groups in nitrenoids R1(Li)OR2 by nucleophiles like R'Li and is in accord with calculational predictions. In the solid state 1 (X = Li) occurs as a Li-linked dimer with three Li-coordinating THF molecules, one of which bridges the two Li centers. R = 2,4,6-trimethylphenyl.
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Key words
crystal structure
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