Structural investigations of metal nitrate complexes. Part II. Crystal and molecular structure of dinitratobis(pyridine)zinc(II), (C5H5N)2Zn(NO3)2

Abstract

The structure of the title compound has been determined by a single-crystal X-ray analysis. The crystals are monoclinic, space group P2₁/n with Z= 4 in a unit cell of dimensions a= 10·27 ± 0·03, b= 18·93 ± 0·03, c= 16·15 ± 0·03 Å, β= 122·8°± 0·2°. The structure was solved by conventional Patterson and Fourier methods and refined by least-squares calculations to R 0·10 for 1044 independent observed data. The analysis resolves the ambiguities which have surrounded the structure of this complex, revealing a monomeric quasi-tetrahedral molecule in which the nitrato-groups appear to be asymmetrically unidentate.