Synthesis, Crystal Structure and Spectroscopic Studies of 1-(pBromphenyl)-3,5 Diphenylformazan

ABSTRACT

In this study, novel 1-substituted-phenyl-3,5-diphenylformazans were synhesized with –Br group at p-positions. Their structures were elucidated by elemental analyses, UV–vis and IR spectroscopy and X-ray single crystal structure determination. Their UV–vis spectra indicated that their λmax showed a shift amount of which was dependent upon the position of the substituent on the ring. The title compound, 1-(p-bromphenyl)-3,5 diphenylformazan, crystallizes in the orthorombic P bca space group, with a=7.9526(9)Å, b=18.611(2) Å, c=23.099(2) Å. The final cycle of refinement was converged to R = 0.0703. The big part of the molecule is coplanar. The molecular conformation is maintained by an intramolecular N-H...N hydrogen bond.

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