Original scientific paper

Crystal and Molecular Structure of Bis(2,2' -bipyridyl)mercury(II) Nitrate Dihydrate

D. Grdenić ; Laboratory of General and Inorganic Chemistry, Faculty of Science, University of Zagreb, P .O. Box 153, 41001 Zagreb, Yugoslavia
B. Kamenar ; Laboratory of General and Inorganic Chemistry, Faculty of Science, University of Zagreb, P .O. Box 153, 41001 Zagreb, Yugoslavia
A. Hergold-Brundić ; Laboratory of General and Inorganic Chemistry, Faculty of Science, University of Zagreb, P .O. Box 153, 41001 Zagreb, Yugoslavia

Abstract

The crystal structure of bis(2,2'-bipyridyl)mercury(II) nitrate
dihydrate has been determined from diffractometer X-ray intensity
data by means of Patterson and Fourier methods and refined by the
full-matrix least-squares technique based on 3589 independent
reflexions to the index R of 0.069. Crystals are monoclinic
holohedral, space group P2i/c with four formula units in the
unit cell of dimensions a = 10.091(2), b = 7.378(3), c = 32.990(6) A,
(J = 105.49(3)0, Dobs =' 1.87 g cm-3, D eal e = 1.888 g cm-3• The nitrogen atoms of the bipyridyl ligands, which are both in their chelate
function, form a flattened tetrahedron around the mercury atom at
a mean Hg-N distance of 2.29 A. Three nitrate oxygen atoms at a
mean Hg . . . 0 distance of 2.72 A, complete the coordination of
mercury to a distorted capped octahedron, whereas the water molecules
are out of the mercury coordination sphere.

Keywords

Hrčak ID:

195851

URI

https://hrcak.srce.hr/195851

Publication date:

1.3.1980.

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