Crystal and molecular structure of 1,1?,3,3?-tetraphenyloxaldiamidrazone

Autor: S. H. Simonsen, R. L. Harlow
Rok vydání: 1975
Předmět:
Zdroj: Journal of Crystal and Molecular Structure. 5:287-294
ISSN: 1572-8854
0308-4086
DOI: 10.1007/bf01270617
Popis: 1,1′,3,3′-Tetraphenyloxaldiamidrazone, C26H24N6, crystallizes in the monoclinic system: space groupP21/c,a= 13.946(1) A,b= 5.706(1) A,c= 17.109(1) A, β = 125.31(1) °,Dm= 1.254,Dc= 1.259 gcm−3 andZ= 2. Intensities were obtained from θ–2θ scans with a Syntex automated diffractometer using graphite-monochromated MoKα radiation. The structure was solved by direct methods. Full-matrix least-squares refinement of all positional and thermal (anisotropic for the nonhydrogen atoms and isotropic for the hydrogen atoms) parameters using 2022 reflections [I>2σ(itI)] converged at a conventionalR of 0.041. The molecule is characterized by a conjugated pi system which includes the central N=C−C=N moiety and two of the four aniline groups. No intermolecular and only weak intramolecular hydrogen bonds are present.
Databáze: OpenAIRE
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