| Dinuclear Pentacarbonyl Tungsten Complex Bridged by Bis（3,5-dimethylpyrazol- 1- yl ） methane |
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| 引用本文： | 赵雪梅,唐良富,杨攀,王积涛. Dinuclear Pentacarbonyl Tungsten Complex Bridged by Bis（3,5-dimethylpyrazol- 1- yl ） methane[J]. 中国化学, 2003, 21(11): 1447-1450. DOI: 10.1002/cjoc.20030211110 |
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| 作者姓名： | 赵雪梅 唐良富 杨攀 王积涛 |
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| 作者单位： | Department of Chemistry，State Key Laboratory of Elemento-Organic Chemistry，Nankai University，Department of Chemistry，State Key Laboratory of Elemento-Organic Chemistry，Nankai University，Department of Chemistry，State Key Laboratory of Elemento-Organic Chemistry，Nankai University，Department of Chemistry，State Key Laboratory of Elemento-Organic Chemistry，Nankai University Tianjin 300071，China，Tianjin 300071，China，Tianjin 300071，China，Institute of Chemical Materials，Chinese Academy of Engineering Physics，Mianyang，Sichuan 621000，China，Tianjin 300071，China |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .2 0 172 0 2 9) |
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| 摘 要： | IntroductionPoly(pyrazol 1 yl)alkanes,especiallybis(pyrazol 1 yl)alkanes ,havebeenoneofpopularpolydentatenitrogendonorligandssinceTrofimenko’sfirstreport1andJulia’slatermodification .2 Ithasbeenfoundthatthecoordinationbehavioroftheseligandscaneasilybeadjustedbychang ingtheelectronicandstericcharacteristicsofsubstituentsonthepyrazolering .Recentinvestigationshavealsoshownthatthecentralcarbonatomoftheseligandscanbemodifiedbythevariousfunctionalgroupstoformversatileheteroscorpionateligands ,wh…
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| 关 键 词： | 双核五羰基钨配合物 双（3 5-二甲基吡唑）甲烷 X-射线 晶体结构 桥联 |
Dinuclear Pentacarbonyl Tungsten Complex Bridged by Bis(3,5-dimethylpyrazol-1-yl)methane |
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| ZHAO,Xue-Mei a TANG,Liang-Fu,a YANG,Pan a,b WANG,Ji-Tao a a. Dinuclear Pentacarbonyl Tungsten Complex Bridged by Bis(3,5-dimethylpyrazol-1-yl)methane[J]. Chinese Journal of Chemistry, 2003, 21(11): 1447-1450. DOI: 10.1002/cjoc.20030211110 |
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| Authors: | ZHAO Xue-Mei a TANG Liang-Fu a YANG Pan a b WANG Ji-Tao a a |
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| Affiliation: | ZHAO,Xue-Mei a TANG,Liang-Fu,a YANG,Pan a,b WANG,Ji-Tao a aDepartment of Chemistry,State Key Laboratory of Elemento-Organic Chemistry,Nankai University,Tianjin 300071,China bInstitute of Chemical Materials,Chinese Academy of Engineering Physics,Mianyang,Sichuan 621000,China |
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| Abstract: | A new bis (pyrazol‐1‐yl) methane ligand, [Ph2 (HO) CCH (3,5‐Me2Pz)2, Pz= pyrazole] (1), with a bulky substituent on the methine carbon atom has been successfully synthesized by the reaction of bis(3,5‐dimethylpyrazol‐1‐yl) methyllithium with benzophenone. Treatment of this ligand with W(CO)6 under UV‐irradiation in THF at room temperature afforded a novel dinuclear complex CH2[3,5‐Me2PzW(CO)5]2 (2) with loss of the Ph2CO fragment, which was characterized by IR, 1H NMR spectra and elemental analyses as well as the X‐ray single crystal diffraction analysis. This compound crystallizes in the or‐thorhombic space group Pbcn, with a = 1.7690(3) nm, b = 1.4460 (3) nm, c = 1.2994 (2) nm, Z = 4, V = 3.3239 (10) nm3, Dc = 1.775 g · m?3, μ = 6.967 mm?1, F (000) = 1672, R1 = 0.0414 and wR2 = 0.0988. Bis(3,5‐dimethylpyrazol‐l‐yl) methane acts as a bridging bidentate ligand in this complex, which links two W(CO)5 fragments. In addition, heating this complex under reflux in 1,2‐dimethoxyethane (DME) gives the known chelated mononuclear complex CH2(3,5‐Me2Pz)2‐W(CO)4 (3). |
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| Keywords: | bis(pyrazol-1-yl)methane tungsten X-ray crystal structure |
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