The employment of N-hydroxy-pyridine-2-carboxamidine in the coordination chemistry of zinc（II）, nickel（II） and manganese（II） under solvothermal conditions is reported. Four complexes of compositions, [Zn2（O2CMe...The employment of N-hydroxy-pyridine-2-carboxamidine in the coordination chemistry of zinc（II）, nickel（II） and manganese（II） under solvothermal conditions is reported. Four complexes of compositions, [Zn2（O2CMe）3{（py）C（NH2）NOH}4]（OH） （1）, [Zn4（OH）2{（py）C（NH2）- NO}4CI2]＇3MeCN （2）, [Ni（SO4）（H20）{（py）C（NH2）NOH}2]＇H2O （3） and [Mn（SO4）{（py）C（NH2）- NOH}2]n （4）, have been synthesized by rationally choosing different metal salts and dexterously employing acetate and sulfate ions as the bridging groups. Luminescent properties for 2 suggested strong emission in the solid state at room temperature. Variable temperature （2.0-300 K） magnetic studies for the linear chain complex 4 indicate weak antiferromagnetic Mn（Ⅱ）...Mn（Ⅱ） exchange interactions.展开更多
Two zinc complexes, [Zn(MPIP)Cl2](1) and [Zn(EPIP)Cl2](2), where MPIP = 1-(methoxymethyl)-3-(pyridin-2-yl)imidazo[1,5-a]pyridine and EPIP = 1-(ethoxymethyl)-3-(pyridin-2-yl)imidazo[1,5-a]pyridine, were synthesized und...Two zinc complexes, [Zn(MPIP)Cl2](1) and [Zn(EPIP)Cl2](2), where MPIP = 1-(methoxymethyl)-3-(pyridin-2-yl)imidazo[1,5-a]pyridine and EPIP = 1-(ethoxymethyl)-3-(pyridin-2-yl)imidazo[1,5-a]pyridine, were synthesized under solvothermal conditions. The etheric ligand MPIP was formed in situ via metal ligand reaction between(3-(pyridin-2-yl)imidazo[1,5-a]pyridin-1-yl)methanol(HPIPM) and methanol solvent. Similarly, the ligand EPIP was generated in situ from the reaction of HPIPM with ethanol solvent. The structures of 1 and 2 were characterized by X-ray single-crystal diffraction analysis. They are four-coordinated mononuclear complexes, and the ZnII ion of 1 and 2 displays distorted tetrahedral geometry. The photoluminescent properties of 1 and 2 were investigated. Strong emissions were observed for both 1 and 2, which were ascribed as the intraligand(π-π*) fluorescent transitions. This paper provides a simple and efficient method for the synthesis of etheric compounds.展开更多
基金Supported by NNSFC(21272167 and 21201127)the Priority Academic Program Development of Jiangsu Higher Education Institution,Graduate Education Innovation Project in Jiangsu Province(CXZZ12_0808 and CXLX12_0784)KLSLRC(KLSLRC-KF-13-HX-1)
文摘The employment of N-hydroxy-pyridine-2-carboxamidine in the coordination chemistry of zinc（II）, nickel（II） and manganese（II） under solvothermal conditions is reported. Four complexes of compositions, [Zn2（O2CMe）3{（py）C（NH2）NOH}4]（OH） （1）, [Zn4（OH）2{（py）C（NH2）- NO}4CI2]＇3MeCN （2）, [Ni（SO4）（H20）{（py）C（NH2）NOH}2]＇H2O （3） and [Mn（SO4）{（py）C（NH2）- NOH}2]n （4）, have been synthesized by rationally choosing different metal salts and dexterously employing acetate and sulfate ions as the bridging groups. Luminescent properties for 2 suggested strong emission in the solid state at room temperature. Variable temperature （2.0-300 K） magnetic studies for the linear chain complex 4 indicate weak antiferromagnetic Mn（Ⅱ）...Mn（Ⅱ） exchange interactions.
基金Supported by the Natural Science Foundation of Shaanxi Province(2018JM2055,2018JQ2079,2018JQ2040)
文摘Two zinc complexes, [Zn(MPIP)Cl2](1) and [Zn(EPIP)Cl2](2), where MPIP = 1-(methoxymethyl)-3-(pyridin-2-yl)imidazo[1,5-a]pyridine and EPIP = 1-(ethoxymethyl)-3-(pyridin-2-yl)imidazo[1,5-a]pyridine, were synthesized under solvothermal conditions. The etheric ligand MPIP was formed in situ via metal ligand reaction between(3-(pyridin-2-yl)imidazo[1,5-a]pyridin-1-yl)methanol(HPIPM) and methanol solvent. Similarly, the ligand EPIP was generated in situ from the reaction of HPIPM with ethanol solvent. The structures of 1 and 2 were characterized by X-ray single-crystal diffraction analysis. They are four-coordinated mononuclear complexes, and the ZnII ion of 1 and 2 displays distorted tetrahedral geometry. The photoluminescent properties of 1 and 2 were investigated. Strong emissions were observed for both 1 and 2, which were ascribed as the intraligand(π-π*) fluorescent transitions. This paper provides a simple and efficient method for the synthesis of etheric compounds.
