Abstract
The structure of the [NiPy4(NO3)2]·2Py clathrate was determined by single crystal X-ray diffraction analysis (KM-4 diffractometer, λMoKa radiation, graphite monochromator, ω/2θ scan mode, θmax=30°, 640 reflections, R=0.065). Orthorthombic base-centered unit cell, space group Ccca, a=12.148(5), b=15.019(4), c=16.96(1) Å, Z=4C30H30N8NiO6, dcalc=1.411 g/cm3. The structure is of island type and consists of distorted octahedral trans-[NiPy4(NO3)2] (host) and pyridine (guest) molecules. The Ni(II) cation coordinated by four nitrogens of the pyridine ligands and two oxygens of the nitrato groups lies in the special position 222; the twofold axes coincide with the directions of the metal-ligand bonds. The guest pyridine molecules lie on the twofold axes that are parallel to the c axes and are oriented in such a way that the total dipole moment of the guest subsystem is zero.
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Additional information
Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Institute of Physical Chemistry, Polish Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 36, No. 5, pp. 912–918, September–October, 1995.
Translated by L. Smolina
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Soldatov, D.V., Lipkowski, J. & Grachev, E.V. Crystal structure of the dinitratotetrakis(pyridine)nickel(II) clathrate with pyridine as guest, [NiPy4(NO3)2]·2Py. J Struct Chem 36, 830–836 (1995). https://doi.org/10.1007/BF02579677
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DOI: https://doi.org/10.1007/BF02579677