CRYSTAL STRUCTURE OF bis[1-{(3,5-DIMETHYL-1
H-PYRAZOL-1-YL)METHYL}-3,5-DIMETHYL-1
H-PYRAZOL-2-IUM] HEXACHLOROURANATE(IV): [H
2C(3,5-Me
2pz)(3,5-Me
2pzH)]
2[UCl
6]
J. M. Carretas1, J. Cui1, A. Cruz1, I. C. Santos1,2, J. Marçalo1
1Centro de Ciências e Tecnologias Nucleares, Lisboa, Bobadela LRS, Portugal
2Centro de Química Estrutural, Lisboa, Portugal
Keywords: uranium, bis(3,5-dimethylpyrazol-1-yl)methane, pyrazolium, crystal structure, short contacts
Abstract
The X-ray diffraction study of a single crystal with the composition [H
2C(3,5-Me
2pz)(3,5-Me
2pzH)]
2[UCl
6] (1) is performed. This compound is the product of an attempted synthesis of a bis(pyrazolyl)methane complex of uranium(IV) obtained by the reaction of UCl
4 with bis(3,5-dimethylpyrazol-1-yl)methane in THF.
1 crystallizes in the space group
P-1 of the triclinic system:
a = 9.6616(2) Å,
b = 9.6946(2) Å,
c = 10.7314(2) Å, α = 107.6210(10)°, β = 115.5600(10)°, γ = 99.6710(10)°,
V = 810.45(3) Å
3,
Z = 1,
d
calc = 1.765 g/cm
3, μ = 5.528 mm
-1,
R
1 = 0.0249. The structural unit consists of two separated [H
2C(3,5-Me
2pz)(3,5-Me
2pzH)]
+ cations and a UCl
6
2- anion. In the solid state structure of
1 several short intermolecular N-H⋯N and C-H⋯Cl contacts are identified suggesting the presence of hydrogen bonds.
DOI: 10.1134/S0022476615010254
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