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A new complex with the formula [Co(acac)_2(NITQ)_2]×2CH_2Cl_2 1(acac = acetylacetone, NITQ = 2-(2′-quinoxalinyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide), was synthesized and elucidated structurally as well as magnetically in detail. The crystal belongs to the monoclinic system, space group P2_1/c with a = 9.6896(1), b = 20.539(4), c = 12.147(2) ?, β = 93.84(3)°, M_r = 997.65, V = 2412.1(8) ?~3, Z = 2, Dc = 1.374 g/cm, F(000) = 1038, m = 0.635 mm~(-1), the final R = 0.0539 and w R = 0.1289 for 5998 observed reflections(I > 2σ(I)). The Co(Ⅱ) ion is coordinated by two nitrogen atoms of quinoxaline rings from two NITQs and four oxygen atoms from two acac ions to complete a distorted octahedral coordination environment. Compound 1 is further linked into a three-dimensional(3D) supramolecular network by hydrogen-bonding, Cl×××O weak contact and π···π stacking interactions. The magnetic measurements show compound 1 exhibits weak ferromagnetic interactions.
A new complex with the formula [Co (acac) _2 (NITQ) _2] × 2CH_2Cl_2 1 (acac = acetylacetone, NITQ = 2- (2’-quinoxalinyl) -4,4,5,5-tetramethylimidazoline-1-oxyl- 3-oxide), was synthesized and elucidated structurally as well as magnetically in detail. The crystal belongs to the monoclinic system, space group P2_1 / c with a = 9.6896 (1), b = 20.539 , β = 93.84 (3) °, M_r = 997.65, V = 2412.1 (8) ~ 3, Z = 2 and Dc = 1.374 g / 1), the final R = 0.0539 and w R = 0.1289 for 5998 observed reflections (I> 2σ (I)). The Co (II) ions are coordinated by two nitrogen atoms of quinoxaline rings from two NITQs and four oxygen atoms from two acac ions to complete a distorted octahedral coordination environment. Compound 1 is further linked into a three-dimensional (3D) supramolecular network by hydrogen-bonding, Cl × × O weak contact and π · π stacking interactions. The magnetic measurements show compound 1 exhibits weak ferromagnetic interactions.