| Synthesis and Crystal Structure of (L)_2W(CO)_4·CH_3COCH_3 (L=1-Phenacylimidazole) |
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| 引用本文： | GAN Xian-Xuea ZHAO Xue-Meib SONG Hai-Binb WANG Ji-Taob TANG Liang-Fub② a.Synthesis and Crystal Structure of (L)_2W(CO)_4·CH_3COCH_3 (L=1-Phenacylimidazole)[J].结构化学,2006(6). |
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| 作者姓名： | GAN Xian-Xuea ZHAO Xue-Meib SONG Hai-Binb WANG Ji-Taob TANG Liang-Fub② a |
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| 作者单位： | GAN Xian-Xuea ZHAO Xue-Meib SONG Hai-Binb WANG Ji-Taob TANG Liang-Fub② a (Department of Chemistry and Chemical Engineering，Yibin University，Yibin 644007，China) b (Department of Chemistry，State Key Laboratory of Elemento-Organic Chemistry，Nankai University，Tianjin 300071，China) |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China (Nos. 20472037 and 20421202), the Ministry of Education (NCET-04-0227) and the Research Fund of Yibin University |
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| 摘 要： | 1 INTRODUCTION Due to their variability in binding modes, five- membered heterocyclic ligands such as pyrazole1] and 1,2,4-triazole2] have been drawn much attention. Consequently, there are numerous reports on their derivatives. Imidazoles resemble pyrazoles, and they are isomeric five-membered heterocyclic molecules containing two nitrogen atoms. Furthermore, imida- zole is also a ring component of adenine and purine, one of the most versatile binding sites in biological systems, so th…
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Synthesis and Crystal Structure of (L)_2W(CO)_4·CH_3COCH_3 (L=1-Phenacylimidazole) |
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| Abstract: | The reaction of 1-phenacylimidazole with W(CO)6 in a 1:1 molar ratio under irra- diation with a high-pressure Hg lamp mainly yielded the title compound (C29H26N4O7W, Mr = 726.39), which is of orthorhombic, space group Pbca with a = 27.665(4), b = 7.7807(12), c = 27.803(4) ?, V = 5984.8(16) ?3, Z = 8, Dc = 1.612 g/cm3, λ(MoKα) = 0.71073 ?, μ = 3?.911 mm?1, F(000) = 2864, R = 0.0583 and wR = 0.1502 for 3356 observed reflections (I > 2σ(I)). The crystal structural analysis indicates that in the coordination geometry of tungsten, 1-phenacylimidazole acts as a monodentate ligand and two imidazole ligands locate in a cis-position. |
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| Keywords: | imidazole tungsten carbonyl X-ray structure |
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