Re-refinement of crystal structure of bis(lidocaine) diaquatetrathiocyanatonickelate(II)
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AMIRKHANASHVILI, Koba, SOBOLEV, Alexander, ZHORZHOLIANI, Nani, TSITSISHVILI, Vladimer. Re-refinement of crystal structure of bis(lidocaine) diaquatetrathiocyanatonickelate(II) . In: Chemistry Journal of Moldova, 2020, nr. 1(15), pp. 67-74. ISSN 1857-1727. DOI: https://doi.org/10.19261/cjm.2019.675
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Chemistry Journal of Moldova
Numărul 1(15) / 2020 / ISSN 1857-1727 /ISSNe 2345-1688

Re-refinement of crystal structure of bis(lidocaine) diaquatetrathiocyanatonickelate(II)

DOI: https://doi.org/10.19261/cjm.2019.675
CZU: 54.061+543.6+547.538

Pag. 67-74

Amirkhanashvili Koba1, Sobolev Alexander2, Zhorzholiani Nani1, Tsitsishvili Vladimer1
 
1 Petre Melikishvili Institute of Physical and Organic Chemistry at Ivane Javakhishvili Tbilisi State University,
2 University of Western Australia
 
Disponibil în IBN: 2 iulie 2020


Rezumat

This paper reports on the synthesis and structure re-refinement of bis(lidocaine) diaquatetrathiocyanatonickelate(II). The compound with the formula (LidH)2[Ni(NCS)4(H2O)2], where Lid is (2-(diethylamino)-N-(2,6-dimethylphenyl)acetamide, crystallizes in the monoclinic space group P21/c with a= 18.3509(5), b= 7.6532(2), c= 14.9585(4) Å, β= 109.964 (2)°, V= 1974.57 (9) Å3, and Z= 2. Coordination of the Ni2+ ion with thiocyanate ions and water molecules generates the slightly distorted octahedral anion [Ni(NCS)4(H2O)2]2– with N-bonded thiocyanate groups, while two protonated cations LidH+ remain in an outer coordination field. The anion and cations are associated through hydrogen bonds formed by sulphur atoms with amido nitrogen atoms; water molecules and an amino nitrogen atom are involved in the formation of hydrogen bonds with sulphur atoms of neighbouring unit cells arranging alternating [Ni(NCS)4(H2O)2]2– anions and LidH+ cations into endless sheets lying in the ac plane.

Cuvinte-cheie
lidocaine complex, Nickel(II), crystal structure, hydrogen bond