A kind of cobalt complex, preparation method and use thereof
A cobalt complex and hydroxyl technology, which is applied in the preparation of organic compounds, cobalt organic compounds, organic compound/hydride/coordination complex catalysts, etc., can solve environmental pollution and other problems, and achieve less waste and high yield , the effect of high catalytic activity
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Embodiment 1
[0028] 10ml, the concentration is 0.1mol·L -1 The methanol solution of 3-hydroxy-2-quinoxalinecarboxylic acid was added dropwise to 5ml with a concentration of 0.05mol L -1 Co(ClO 4 ) 2 .6H 2 O aqueous solution, shake well, obtain a red clear solution, stand at room temperature for 8 days to carry out self-assembly reaction, obtain red massive crystal, then wash with absolute ethanol, ether successively, dry, obtain molecular formula [Co( qc) 2 (H 2 O) 2 ]·2H 2 The cobalt complex of O, in which qc represents 3-hydroxy-2-quinoxaline carboxylate, has the structural formula as formula (I), and the yield is 54%. According to X-single crystal diffractometer analysis, the cobalt complex prepared in this example is a complex with a mononuclear structure. Elemental analysis: according to the theoretical formula C 18 h 18 CoN 4 o 10 , calculated value: C42.45, H3.56, N11.00%; measured value: C42.53, H3.37, N10.88%.
[0029] Structure determination of the complex:
[0030]...
Embodiment 2
[0038] 8ml, the concentration is 2mol·L -1 The methanol solution of 3-hydroxyl-2-quinoxalinecarboxylic acid was added dropwise to 2ml with a concentration of 1mol L -1 Co(ClO 4 ) 2 ·6H 2The aqueous solution of O was shaken up to obtain a red clear solution, which was left to stand at room temperature for 9 days to carry out self-assembly reaction to obtain red blocky crystals, which were then washed with absolute ethanol and ether and dried to obtain the molecular formula [Co( qc) 2 (H 2 O) 2 ]·2H 2 The cobalt complex of O, in which qc represents 3-hydroxy-2-quinoxaline carboxylate, has the structural formula as formula (I), and the yield is 59%. According to X-single crystal diffractometer analysis, the cobalt complex prepared in this example is a complex with a mononuclear structure. The crystal determination data and crystal structure are the same as the compound in Example 1.
Embodiment 3
[0040] 12ml, the concentration is 0.05mol·L -1 The methanol solution of 3-hydroxyl-2-quinoxalinecarboxylic acid was added dropwise to 6ml with a concentration of 0.02mol L -1 Co(ClO 4 ) 2 ·6H 2 The aqueous solution of O was shaken up to obtain a red clear solution, which was allowed to stand at room temperature for 6 days for self-assembly reaction to obtain red blocky crystals, which were then washed with absolute ethanol and ether and dried to obtain the molecular formula [Co( qc) 2 (H 2 O) 2 ]·2H 2 The cobalt complex of O, in which qc represents 3-hydroxy-2-quinoxaline carboxylate, has the structural formula as formula (I), and the yield is 59%. According to X-single crystal diffractometer analysis, the cobalt complex prepared in this example is a complex with a mononuclear structure. The crystal determination data and crystal structure are the same as the compound in Example 1.
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