Syntheses, Crystal Structures and Antibacterial Activities of Cobalt(Ⅱ) and Manganese(Ⅱ) Complexes with Schiff Base Ligand Derived from Tryptamine
刘超;牛俊峰;李阳;徐基贵;刘新华
a (School of Chemistry and Chemical Engineering,Suzhou University, Suzhou 234000, China)
b (School of Pharmacy, Anhui Medical University, Hefei 230000, China)
Syntheses, Crystal Structures and Antibacterial Activities of Cobalt(Ⅱ) and Manganese(Ⅱ) Complexes with Schiff Base Ligand Derived from Tryptamine
LIU Chao;NIU Jun-Feng;LI Yang;XU Ji-Gui;LIU Xin-Hua
a (School of Chemistry and Chemical Engineering,Suzhou University, Suzhou 234000, China)
b (School of Pharmacy, Anhui Medical University, Hefei 230000, China)
Two new mononuclear complexes, namely [Co(L)2] (1) and [Mn(L)2] (2) (HL = N-(3-methylsalicylidene)tryptamine), have been synthesized by the reactions of the ligand with cobalt acetate or manganese acetate in anhydrous ethanol. The crystal structures of the complexes were characterized by IR spectrum, elemental analysis, PXRD and single-crystal X-ray diffraction analysis. Complex 1 crystallizes in monoclinic, space group C2/c, with a = 23.146(2), b = 9.4864(10), c = 13.9261(15) Å, β = 102.898(2)°, V = 2980.6(5) Å3, Z = 4, Dc = 1.367 g/cm3, F(000) = 1284 and μ = 0.616 mm-1. Complex 2 crystallizes in monoclinic, space group P21/n, with a = 14.807(11), b = 13.118(10), c = 16.663(13) Å, β = 111.237(14)°, V = 3017(4) Å3, Z = 4, Dc = 1.342 g/cm3, F(000) = 1276 and μ = 0.477 mm-1. The units of complex 1 are linked by intermolecular N–H•••π hydrogen bonds into infinite 1D chains, which are further extended into a 3D supramolecular structure by a series of π•••π stacking interactions. The units of complex 2 are linked by intermolecular N–H•••π hydrogen bonds and C–H•••π hydrogen bonds into an infinite 3D supramolecular structure. Meanwhile, the antibacterial activities of the ligand and its complexes have been tested against four kinds of bacteria. The results show that the three compounds all have excellent antibacterial activities and that 1 and 2 possess stronger inhibiting effects against the bacteria than the Schiff base.
Two new mononuclear complexes, namely [Co(L)2] (1) and [Mn(L)2] (2) (HL = N-(3-methylsalicylidene)tryptamine), have been synthesized by the reactions of the ligand with cobalt acetate or manganese acetate in anhydrous ethanol. The crystal structures of the complexes were characterized by IR spectrum, elemental analysis, PXRD and single-crystal X-ray diffraction analysis. Complex 1 crystallizes in monoclinic, space group C2/c, with a = 23.146(2), b = 9.4864(10), c = 13.9261(15) Å, β = 102.898(2)°, V = 2980.6(5) Å3, Z = 4, Dc = 1.367 g/cm3, F(000) = 1284 and μ = 0.616 mm-1. Complex 2 crystallizes in monoclinic, space group P21/n, with a = 14.807(11), b = 13.118(10), c = 16.663(13) Å, β = 111.237(14)°, V = 3017(4) Å3, Z = 4, Dc = 1.342 g/cm3, F(000) = 1276 and μ = 0.477 mm-1. The units of complex 1 are linked by intermolecular N–H•••π hydrogen bonds into infinite 1D chains, which are further extended into a 3D supramolecular structure by a series of π•••π stacking interactions. The units of complex 2 are linked by intermolecular N–H•••π hydrogen bonds and C–H•••π hydrogen bonds into an infinite 3D supramolecular structure. Meanwhile, the antibacterial activities of the ligand and its complexes have been tested against four kinds of bacteria. The results show that the three compounds all have excellent antibacterial activities and that 1 and 2 possess stronger inhibiting effects against the bacteria than the Schiff base.
This project was supported by the National Natural Science Foundation of China (No. 21272008)
and the Natural Science Industry-University-Research Foundation of Suzhou University (2015hx014)
通讯作者:
刘超
E-mail: ahliuchao333@163.com
引用本文:
刘超;牛俊峰;李阳;徐基贵;刘新华. Syntheses, Crystal Structures and Antibacterial Activities of Cobalt(Ⅱ) and Manganese(Ⅱ) Complexes with Schiff Base Ligand Derived from Tryptamine[J]. 结构化学, 2016, 35(7): 1002-1010.
LIU Chao;NIU Jun-Feng;LI Yang;XU Ji-Gui;LIU Xin-Hua. Syntheses, Crystal Structures and Antibacterial Activities of Cobalt(Ⅱ) and Manganese(Ⅱ) Complexes with Schiff Base Ligand Derived from Tryptamine. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2016, 35(7): 1002-1010.
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