

Synthesis, characterization and crystal structure of a novel tetranuclear Co(II) cubane cluster
Hong Chen (1,*)



(1) Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, P. R. China
(2) Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, P. R. China
(3) Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
(*) Corresponding Author
Received: 14 Jun 2019 | Revised: 07 Jul 2019 | Accepted: 12 Jul 2019 | Published: 30 Sep 2019 | Issue Date: September 2019
Abstract
A new tetranuclear Co(II) cubane cluster 1, [Co4(L1)4(L2)4]·4CH3CH2OH (HL1 = 2-Methylquinolin-8-ol, HL2 = t-Bu-COOH), has been synthesized and characterized by X-ray single crystal diffraction, FT-IR, TG/DSC, and elementary analysis. The data reveals that it has a very interesting structural motif consisting of a [Co4O4] core in the form of a cube with the Co and O occupying opposite corners. In the crystal structure of complex 1, the molecules are linked by intramolecular C−H···O hydrogen bonding interactions and Van der Waals forces, forming a three-dimensional network structure. Crystal data for complex 1: C60H68Co4N4O12, triclinic, space group P-1 (no. 2), with a = 12.0644(4), b = 12.0996(3), c = 20.2858(7) Å, α = 92.005(3)o, β = 92.182(3)°, γ = 97.943(3)°, Z = 2, V = 2928.25(16) Å3, T = 293 K, μ(MoKα) = 1.178 mm-1, Dcalc = 1.444 g/cm3, 16737 reflections measured (3.00° ≤ θ ≤ 28.53°), 9010 unique (Rint = 0.024, Rsigma = 0.0574) which were used in all calculations. The final R1 was 0.039 (I≥2σ(I)) and wR2 was 0.090 (all data).
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DOI: 10.5155/eurjchem.10.3.256-262.1906
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The Analytical & Testing Center of China Three Gorges University, Yichang, China and The Institute of Nuclear Science and Technology, Sichuan University, Chengdu, China.
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