Acta Cryst. (2012). E68, m23-m24  [ doi:10.1107/S1600536811052214 ]

(12,17-Diethoxycarbonyl-11,18-dimethyl-2,3:6,7-dibutanocorrphycenato)copper(II)-12,17-diethoxycarbonyl-11,18-dimethyl-2:3,6:7-dibutanocorrphycene (3/97)

Y. Ohgo, Y. Yokoyama, D. Hashizume, S. Neya and M. Nakamura

Abstract: The corrphycene molecule of the title compound, [Cu(C₃₆H₃₆N₄O₄)]_0.034.0.966C₃₆H₃₈N₄O₄, has an essentially planar macrocyclic framwork with a slightly distorted trapezoidal N₄ core; the r.m.s. deviation of the peripheral 20 C atoms and four N atoms is 0.054 (3) Å. The surface area within the N₄-coordinating core (8.358 Å²) is significantly smaller than that (8.503 Å²) of the corresponding free-base porphyrin. Two intramolecular N-HN hydrogen bonds are observed. Detailed structure analysis clarified that the co-crystallization of the free-base corrphycene together with a quite minor component (ca 3%) of corrphycenato-Cu^II occurred in the recrystallization process.

Online 10 December 2011

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