Abstract
Carbamoylated oximes 1 form 1:1 molecular complexes 4 with N,N-dialkyl-N′-phenylurea when stirred in THF or ether at room temperature for short time in good yields. The molecular complexes 4a–e were isolated and characterized by analytical and spectral means. X-ray crystallographic analysis for complex 4a was performed. In this paper, we report the use of complex 4a and its moieties as building blocks to form non-interacting polymeric zigzag chains by inter- and intramolecular hydrogen bonds along b-axis, and details of supramolecular architecture of 4a. There is a intramolecular H–H interaction between hydrogen of urea NH and neighboring hydrogen of diisopropyl's CH linked to the other urea nitrogen. In addition, to obtain the most favorable orientation of the moieties of the title complex, PM3 semi-empirical quantum mechanical calculations were performed and then results from X-ray crystallography and computational modeling were compared.
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