Fe(III)-Co(II) mixed metal coordination polymer, preparation method and application thereof
A technology of coordination polymers and mixed metals, applied in separation methods, chemical instruments and methods, educts, etc., to achieve the effects of high crystal purity, easy control of conditions, and simple preparation methods
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[0041] The embodiment of the present invention also provides a preparation method of Fe(III)-Co(II) mixed metal coordination polymer, including:
[0042] (1) dissolving iron salt, cobalt salt and sodium salt in water under normal temperature conditions to obtain iron-cobalt cluster salt;
[0043] (2) Dissolve the iron-cobalt cluster salt prepared in step (1) with tris(4'-carboxybiphenyl)amine and glacial acetic acid in DMF and mix evenly, and then heat up the formed mixed solution at a rate of 10°C / h Heating speed to 120-170°C, keeping the temperature for more than 1 day, and then cooling down to room temperature to obtain the Fe(III)-Co(II) mixed metal coordination polymer;
[0044] Wherein, the iron salt includes iron nitrate, the cobalt salt includes cobalt nitrate, and the sodium salt includes sodium acetate.
[0045] Further, the molar ratio of the iron salt, cobalt salt and sodium salt in step (1) is 0.1-0.6:0.4-1.5:1-3.
[0046] Further, the molar ratio of the iron-co...
Embodiment 1
[0058] Firstly, ferric nitrate (0.01mol, 4.0g), cobalt nitrate (0.04mol, 11.6g) and sodium acetate (0.1mol, 8.2g) were dissolved in water (100mL) and stirred, then suction filtered to prepare iron-cobalt cluster salt. Then tris(4'-carboxybiphenyl)amine (0.015mmol, 9.1mg), iron-cobalt cluster salt (0.05mmol, 27.0mg) and glacial acetic acid (0.15mL) were dissolved in DMF (5mL) to make a solution and sealed in In a 25mL reactor, heat up to 160°C at a rate of 10°C per hour, maintain this temperature for 1 day, and then cool down to room temperature naturally to obtain dark red blocky single crystal product crystals with a yield of about 65%. The main infrared absorption peaks are: 3387w, 1670vs, 1592s, 1528m, 1495m, 1405vs, 1323m, 1281m, 1196w, 1108w, 832w, 781m, 727w, 652w, 490w.
Embodiment 2
[0060] First, ferric nitrate (0.03mol, 12.1g), cobalt nitrate (0.1mol, 29.1g) and sodium acetate (0.3mol, 24.6g) were dissolved in water (100mL) and stirred, then suction filtered to obtain iron-cobalt cluster salt. Then tris(4'-carboxybiphenyl)amine (0.025mmol, 15.1mg), iron-cobalt cluster salt (0.15mmol, 81.1mg) and glacial acetic acid (0.20mL) were dissolved in DMF (5mL) to make a solution and sealed in In a 25mL reactor, heat up to 160°C at a rate of 10°C per hour, maintain this temperature for 1 day, and then cool down to room temperature naturally to obtain dark red blocky single crystal product crystals with a yield of about 51%. The main infrared absorption peaks are: 3378w, 1672vs, 1593s, 1518m, 1488m, 1405vs, 1315m, 1279m, 1187w, 1102w, 830w, 782m, 727w, 653w, 491w.
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