Abstract

In the title compound, [Ca(C 6 H 2 N 3 O 7 ) 2 (C 12 H 8 N 2 ) 2 ], the Ca 2+ ion exhibits eightfold coordination with four O atoms, two from each 2,4,6-trinitrophenolate (picrate) molecule, and four N atoms from two phenanthroline molecules, forming a twisted square antiprism. The N atoms of the phenanthroline molecule are polarized by the cation so that the Ca-N distances are comparable to the Ca-O(NO) distances.

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