coordination (n = 2, 3) of their phenyl groups to the sodium centers of adjacent molecules. In contrast, not only deprotonation but also desilylation occurs on reaction of NaN(SiMe3)2 with H(Ph)NN(Ph)SiMe3 or of NaNH2 with (Me3Si)HNNPh2) The latter reaction results in the formation ot hexameric (NaHNNPh2)6 which adopts a face-sharing double-cubane structure.
The crystal and molecularstructures of a series of N-phenyl-substituted lithium hydrazides were determined in order to investigate possible Li···Ph π interactions. These are pronounced when there are no donor molecules present to solvate the Li centers. An η6-Li···Ph interaction is particularly distinct in tetrameric (Me3Si)2N–N(Ph)Li but also in trimeric Ph2N–N(SiMe3)Li Deprotonation of N,N′ -diphenylhydrazine