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Synthesis and crystal structure of a second polymorph of N,N′-bis(salicylidene)-3,5,3′,5′-tetramethyl-biphenyl-4, 4′-diamine

Title
Synthesis and crystal structure of a second polymorph of N,N′-bis(salicylidene)-3,5,3′,5′-tetramethyl-biphenyl-4, 4′-diamine
Authors
Xu L.Qi X.Kim S.-J.
Ewha Authors
김성진
SCOPUS Author ID
김성진scopus
Issue Date
2006
Journal Title
Journal of Structural Chemistry
ISSN
0022-4766JCR Link
Citation
vol. 47, no. 5, pp. 994 - 997
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The Schiff base compound N,N′-bis(salicylidene)-3,5,3′, 5′-tetramethyl-biphenyl-4,4′-diamine was synthesized and crystal structure was determined by single-crystal X-ray diffractometry. The result shows that there is another polymorphic form (B) in structure besides published one (A) [1]. In structure B, there are four aromatic rings. The dihedral angles between the phenol rings and the adjacent dimethylbenzene rings are distinctly larger than that formed by the dimethylbenzene rings, possibly as a result of the steric hindrance of the methyl groups and the presence of intramolecular O-H...N hydrogen bonds. The remarkable defference between A and B lies in the angles of C1-C6 ring and C25-C30 ring, which are 51.64(13)° and 7.40(7)° in B and A, respectively. Crystal data for the title compolex C 30H27N2O2: Monoclinic, P2(1)/c, a = 14.346(3) Å, b = 12.258(2) Å, c = 14.265(3) Å; β = 99.515(4)°, V = 2474.1(7) Å3, Z = 4. © 2006 Springer Science+Business Media, Inc.
DOI
10.1007/s10947-006-0417-2
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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