STRUCTURAL STUDIES OF NICKEL(II) COMPLEXES WITH 1-TERT- BUTYLIMIDAZOLE-2-THIONE AND 3-PHENYL-5-METHYL-PYRAZOLE LIGANDS
U.P. Singh1, V. Aggarwal2
1 Indian Institute of Technology Roorkee, udaipfcy@iitr.ernet.in
2 Indian Institute of Technology Roorkee
Ключевые слова: synthesis, 1-tert-butylimidazole-2-thione, nickel(II), 3-phenyl-5-methyl-pyrazole, non-covalent interactions
Страницы: 691-697
Аннотация
The nickel(II) complexes dichlorobis(1-tert-butylimidazole-2-thione)nickel(II) [Ni(tmt-Bu)2Cl2] (1), dinitratobis(1-tert-butylimidazole-2-thione)nickel(II) [Ni(tmt-Bu)2(NO3)2] (2), dichloro-bis(3-phenyl-5-methyl-pyrazole)(1-tert-butylimidazole-2-thione)nickel(II) [Ni(pzPh,MeH)2 (tmt-Bu)Cl2] (3) and dinitratobis(3-phenyl-5-methyl-pyrazole)(1-tert-butylimidazole-2-thione)nickel(II) [Ni(pzPh,MeH)2(tmt-Bu)(NO3)2] (4) have been synthesized and studied. The single crystal X-ray diffraction analysis was carried out for 1 and 4 {Bruker Kappa Apex-II CCD diffractometer, MoKα radiation}. Crystal data for 1: monoclinic C2/c, a = 16.949(2) Å, b = 8.6647(10) Å, c = 15.461(3) Å, β = 117.662(4)°, V = 2011.1(5) Å3, Z = 4, Dcalc = 1.460 g/cm3. Crystal data for 4: triclinic P-1, a = 9.9775(7) Å, b = 11.2254(8) Å, c = = 14.8068(10) Å, α = 75.401(4)°, β = 87.422(4)°, γ = 74.874(4)°, V = 1548.86(19) Å3, Z = 2, Dcalc = 1.405 g/cm3. Coordination core of complex 1 adopts distorted tetrahedral geometry whereas core 4 has distorted octahedral geometry. The bonded nitrates are of two types coordinating as monodentate and bidentate ligands.
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