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Synthesis and Structure of Tetrahomodioxa p-phenylcalix(4)arene dihexylether  

노광현 (숙명여자대학교 이과대학 자연과학부 화학전공)
박영자 (숙명여자대학교 이과대학 자연과학부 화학전공)
Publication Information
Korean Journal of Crystallography / v.13, no.3_4, 2002 , pp. 158-164 More about this Journal
Abstract
Tetrahomodioxa p-phenylcalix(4)arene dihexylether(C/sub66/H/sub68/O/sub6/) has been synthesized and structurally characterized by X-ray diffraction. Reaction of tetrahomodioxa p-phenylcalix(4)arene with hexyl halide and NaH in DMF leads to the dihexyl derivatives, 7,13,21,27-tetraphenyl-29,31-dihexyloxy- 2,3,16,17-tetrahomo-3,17-dioxacalit(4)arenes. The crystal is orthorhombic, P2₁2₁2₁, a= 9.764(2), b=16.167(2), c=32.994(3) Å, V=5208(1) Å, Z= 4, Dc = 1.221 gcm/sup -3/. The structure was solved by direct methods and refined by full-matrix least squares. Refinement converged at R = 0.070 for 2009 observed reflections. This molecule has a C-1,2-alternate conformation with pseudo-centrosymmetry and has two pairs of opposite phenyl rings, which are approximately parallel to each other. The benzene rings A and B are up, and the rings C and D rings are down with respect to the plane of the macrocyclic ring.
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