含二硒磷酸配位基之金屬鎢、鉻錯合物合成

Synthesis of tungsten and chromium complexes containing Dialkyl Diselenophosphate Ligands

陳偉嘉(Wei-Chia Chen)

指導教授 ： 劉鎮維

中原大學/理學院/化學研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300587

摘要

摘要

本實驗利用有機金屬化學的17個電子點式分別以[-(Se)SeP(OR)2]2 (R = iPr，Et，nPr)和[Cr(CO)3Cp]2、[W(CO)3Cp]2反應，在0℃下合成單核金屬鉻螯合化合物Cp(CO)2Cr[Se2P(OC3H7)2]，在室溫下合成出單核金屬鎢化合物Cp(CO)3WSe2P(OiPr)2，Cp(CO)3WSe2P(OEt)2，Cp(CO)3WSe2P(OnPr)2，還有在高溫(90℃)下可以合成雙核金屬鎢化合物[CpW]2[Se3P(Se)(OC3H7)2]2，其可水解成含有磷氧雙鍵的化合物[CpW]2[Se3P(O)(OC3H7)2]2，綜合實驗結果，本系列實驗可能從單核化合物Cp(CO)3MSe2P(OR)2反應成螯合化合物Cp(CO)2M[Se2P(OR)2]，再生成雙核化合物[CpM]2[Se3P(Se)(OR)2]2，最後水解成[CpW]2[Se3P(O)(OC3H7)2]2。

關鍵字

鉻 ； 鎢

並列摘要

Abstrast
We report that the cyclopentadienyltungsten tricarbonyl radical can be used to cleavage the selenium-selenium bond in the bis(selenophosphoryl)diselenides,(RO)2P(Se)SeSeP(Se)(OR)2 (R = iPr, Et, nPr). Especially treatment of [CpM(CO)3]2 (Cp = C5H5, M = Cr, W) with (RO)2P(Se)SeSeP(Se)(OR)2 in toluene affords not only the CpM(CO)3[Se2P(OR)2] (M = W), CpM(CO)2[Se2P(OR)2] (M = Cr), but also two products, (CpM)2{μ-Se3P(Se)(OR)2}2 and (CpM)2{μ-Se3P(O)(OR)2}2 (M = W), which exhibit the first coordinated “selenium rich” diselenophosphato and monoselenophosphato ligands. And we suppose that CpM(CO)3[Se2P(OR)2] can be reacted to CpM(CO)2[Se2P(OR)2], then become (CpM)2{μ-Se3P(Se)(OR)2}2. Finally, (CpM)2{μ-Se3P(O)(OR)2}2 is found.

並列關鍵字

tungsten ； chromium

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