Syntheses, Crystal Structures, Non-covalent Interactions and Properties of a Nickel(II) Complex Monomer and Its Dimer

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摘要 A pair of nickel(II) complexes monomer and dimer, namely [NiCl2(L)] (1) and [Ni2Cl2(L)2(μ-Cl)2] (2) (L = 2-morpholine-4-yl-4,6-di-pyrazol-1-yl-1,3,5-triazine), were synthesized by using L to react with NiCl2·2H2O at 35 and 65 ℃, respectively. X-ray crystal structures of complexes 1 and 2 were determined. Complex 1 is mononuclear and its nickel(II) center resides in a distorted square-pyramidal environment with a NiN3Cl2 donor set, but complex 2 is binuclear and its nickel(II) center shows a distorted octahedral geometry with a NiN3Cl3 donor set. In complex 2, two adjacent nickel(II) centers are connected by two bridging chloride anions. Complexes 1 and 2 form different three-dimensional supramolecular structures through non-covalent interactions such as π-π stacking interactions, anion-π interactions and weak hydrogen bonds. Both complexes were further characterized by thermal gravimetric analyses and spectroscopic methods.

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	楚进锋
	王术影
	张明煜
	徐启欣
	王有卿

关键词 ： nickel complex, monomer, dimer, crystal structure, spectroscopic properties

Abstract：A pair of nickel(II) complexes monomer and dimer, namely [NiCl2(L)] (1) and [Ni2Cl2(L)2(μ-Cl)2] (2) (L = 2-morpholine-4-yl-4,6-di-pyrazol-1-yl-1,3,5-triazine), were synthesized by using L to react with NiCl2·2H2O at 35 and 65 ℃, respectively. X-ray crystal structures of complexes 1 and 2 were determined. Complex 1 is mononuclear and its nickel(II) center resides in a distorted square-pyramidal environment with a NiN3Cl2 donor set, but complex 2 is binuclear and its nickel(II) center shows a distorted octahedral geometry with a NiN3Cl3 donor set. In complex 2, two adjacent nickel(II) centers are connected by two bridging chloride anions. Complexes 1 and 2 form different three-dimensional supramolecular structures through non-covalent interactions such as π-π stacking interactions, anion-π interactions and weak hydrogen bonds. Both complexes were further characterized by thermal gravimetric analyses and spectroscopic methods.

Key words： nickel complex monomer dimer crystal structure spectroscopic properties

收稿日期: 2020-03-18 出版日期: 2020-10-10

基金资助:This work was supported by the Fundamental Research Funds for the Central Universities (XK1802-6, XK1803-05, XK1902, 12060093063)

通讯作者: chujf@mail.buct.edu.cn E-mail: chujf@mail.buct.edu.cn

引用本文:

楚进锋;王术影;张明煜;徐启欣;王有卿. Syntheses, Crystal Structures, Non-covalent Interactions and Properties of a Nickel(II) Complex Monomer and Its Dimer[J]. 结构化学, 2020, 39(10): 1877-1884.
CHU Jin-Feng;WANG Shu-Ying;ZHANG Ming-Yu;XU Qi-Xin;WANG You-Qing . Syntheses, Crystal Structures, Non-covalent Interactions and Properties of a Nickel(II) Complex Monomer and Its Dimer. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2020, 39(10): 1877-1884.

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http://manu30.magtech.com.cn/jghx/CN/ 或 http://manu30.magtech.com.cn/jghx/CN/Y2020/V39/I10/1877

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