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A novel copper(II) complex [Cu2(BIT)4(DMF)2]•2DMF (BIT = 1,2-benzisothiazolin-3-one, DMF = N,N-dimethylformamide) was synthesized via standing diffusion method. The structure of crystal was characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. The complex crystallizes in monoclinic C2/c space group and a = 30.850 (3) A, b = 8.5534 (8) A, c = 21.6491 (18) A, β= 128.487 (2)°, V = 4.4716 (7) nm3, Z = 4. The fluorescent properties of the complex was studied. Theoretical study of the complex was carried out by density functional theory B3LYP method using Gaussian 03 program. CCDC: 911350.

A novel complex, [(Cu2L4(CH3OH)(H2O)]·1/2CH3OH·H2O (HL = 2-furoic acid), was synthesized and characterized by elemental analysis, IR spectroscopy, and X-ray single-crystal diffraction. The title complex crystallizes in monoclinic, space group P2(1)/c with a = 10.2035 (12) A, b = 13.1875 (17) A, c = 20.069 (3) A, a = 90°, b = 90.1460 (10)°, g = 90°, V = 2700.4 (6) nm3, Z = 2, F(000) = 1332, S = 1.053, Dc = 1.612 g·cm−3, R 1 = 0.0664 ((I > 2σ(I)), wR 2 = 0.1772, μ = 1.648 mm−1. Theoretical study of the title complex was carried out by Density Functional Theory B3LYP method. CCDC: 921325.