Characterization and Crystal Structure of a New Holmium(Ⅲ) Complex with the Macrocyclic Ligand Derived from 2,6-Diformyl-4-methylphenol and Diethylenetriamine |
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作者姓名: | HU Xue-Lei QIU Li ZHAO Yuan-Di PAN Zhi-Quan |
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作者单位: | [1]Key Laboratory of Biomedical Photonics of Ministry of Education - Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics and Molecular Imaging Key Laboratory - KeyLaboratory of Molecular Biophysics of the Ministry of Education, Huazhong University of Science and Technology . Wuhan,430074 China [2]Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430073, China |
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基金项目: | Supported by the NNSFC (No. 20671075) and China Postdoctoral Science Foundation (No. 20060390858) |
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摘 要: | The title compound (13,27-dimethyl-3,6,9,17,20,23-hexaazatricyclo-23.3.1.1^11.15]- triaconta-l(29),2,9,11,13,15(30),16,23,25,27-decaene-29,30-diol-N^3,N^6,N^9,O^29,O^30)-bis(nitrato-O,O')- holmium(m) nitrate hydrate has been prepared and characterized by elemental analysis, infrared spectra, and electrospray mass spectra. Its crystal and molecular structures were determined by X-ray diffraction methods. The crystal crystallizes in the monoclinic system, space group C2/c with a = 23.737(12), b = 14.237(7), c = 19.801(10) A, β = 91.36(1)^o, Mr = 831.57, V = 6690(6) A^3, Z = 8, Dc = 1.651 g/cm^3, F(000) = 3344, R = 0.0482 and wR = 0.0923. The holmium ion is located in one of the compartments of the macrocyclic ligand and presents a distorted tricapped trigonal prismatic coordination geometry. The macrocycle is coordinated with two oxygen and three nitrogen atoms. Two nitrates are chelated in the opposite positions of the macrocycle, and the third one is ionic.
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关 键 词: | 镧(Ⅲ) 大环 晶体结构 络合物 |
收稿时间: | 2007-02-14 |
修稿时间: | 2007-05-14 |
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