Heterometallic Trinuclear Ni_2Zn and Ni_2Mn Complexes of Macrocyclic Oxamide: Synthesis and Crystal

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Two novel heterometallic trinuclear complexes of macrocyclic oxamide [Mn(NiL)2(HBTC)H2O] (1) and [Zn(NiL)2(HBTC)H2O] (2) (NiL, H2L = 2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-dien, H3BTC = 1,3,5-benzenetricarboxylic acid) have been solvothermally synthesized and structurally characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. For 1, the crystals crystallize in the monoclinic system, space group P21/c with a = 11.3595(5), b = 23.1498(11), c = 17.2558(8) and =101.2530(10)°. For 2, the crystals crystallize in the monoclinic system, space group P21/c with a = 11.5214(8), b = 20.6566(14), c = 18.4126(13)  and = 92.6770(10)°. The structures of 1 and 2 have oxamido-bridged trinuclear [NiⅡ2MⅡ] units and consist of two-dimensional supramolecular architectures formed by strong O-H…O intermolecular hydrogen bonds. Two novel heterometallic trinuclear complexes of macrocyclic oxamides [Mn (NiL) 2 (HBTC) H 2 O] (1) and [Zn (NiL) 2 6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-dien, H3BTC = 1,3,5-benzenetricarboxylic acid have been solvothermally synthesized synthetically characterized by elemental analysis, IR spectroscopy For the crystal crystallize in the monoclinic system, space group P21 / c with a = 11.3595 (5), b = 23.1498 (11), c = 17.2558 and  = 101.2530 (10) °. For 2, the crystals crystallize in the monoclinic system, space group P21 / c with a = 11.5214 (8), b = 20.6566 (14), c = 18.4126 ) °. The structures of 1 and 2 have oxamido-bridged trinuclear [NiⅡ2MⅡ] units and consist of two-dimensional supramolecular architectures formed by strong OH ... O intermolecular hydrogen bonds.
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