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  • 學位論文

雙核金屬(Cu,Ag)與二硫(硒)磷酸配位基反應性的比較

A Distinct Reactivity Between Dithiophosphates and Diselenophosphates With Dinuclear Metal complexes ( M = Cu,Ag )

指導教授 : 劉鎮維
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摘要


中文摘要 本篇論文主要是討論 dtp 配位基和 dsep 配位基與 [M2(-dppm)2(CH3CN)2][PF6]2 (M = Cu, Ag) 反應性的不同。 利用dtp 配位基與 [M2(-dppm)2(CH3CN)2][PF6]2 (M = Cu, Ag) 反應後得到以螯合模式鍵結的 [Cu2(-dppm)2(S2P(OR)2)2] (R = Et, 2; iPr, 1)、[Ag2(-dppm)2(S2P(OR)2)2] (R = iPr, 7),架橋模式鍵結的 [Ag4(-dppm)2(S2P(OR)2)4] (R = Et, 4; iPr, 6) 和懸掛式鍵結的 [Ag3(-dppm)3(S2P(OR)2)2][PF6] (R = Et, 5)。 當我們將雙核金屬起始物改為利用單核金屬與 dppm 分別加入的方式反應發現,在 Cu 的部分得到相同結果的 [Cu2(-dppm)2(S2P(OR)2)2] (R = Et, 2; iPr, 1),而在 Ag 的部分則只得到 [Ag4(-dppm)2(S2P(OR)2)4] (R = Et, 4; iPr, 6)的產物。 有趣的是當我們加入 dsep 配位基,配位基上的 Se 原子會被三配位的P打斷,其化合物為[M(SePPh2CH2PPh2)2][PF6] (M = CuⅠ,3; AgⅠ, 8),這個結果讓我們知道 P-Se 比 P-S 的鍵來的弱。而且他們的 31P NMR 圖譜較特別的是包含了 3J 的耦合,使得圖譜看起來更為複雜。 下列為化合物1, 3, 4, 5, 6, 和8 簡單的晶體資料: 1,orthorhomic, Pbcn, Z = 4, a = 18.5658(11)Å, b = 15.5449(9) Å, c = 24.486(2) Å, V = 7078.3(7) Å3, R1 = 0.0474, wR2 = 0.1311; 3, orthorhomic, P21212, Z = 4, a =20.5638(11) Å, b = 39.594(2) Å, c = 11.9181(6) Å, V = 9694.2(9) Å3, R1 = 0.0472, wR2 = 0.0939; 4, monoclinic, P21/n, Z = 4, a = 14.1504(11)Å, b = 17.8787(13) Å, c = 16.4680(10) Å, V = 4165.9 (5) Å3, R1 = 0.0358, wR2 = 0.0936; 5, orthorhomic, Pna21, Z = 4, a = 32.200(2)Å, b = 18.5101(9) Å, c = 14.5405(7) Å, V = 8666.6 (7) Å3, R1 = 0.0366, wR2 = 0.0930; 6, Orthorhomic, Pbca, Z = 4, a = 17.2672(17)Å, b = 22.7228(17) Å, c = 23.462(2) Å, V = 9205.5 (14) Å3, R1 = 0.0660, wR2 = 0.1478; 8, orthorhomic, Pcca, Z = 4, a = 20.9126(12)Å, b = 11.9598(7) Å, c = 19.6907(12) Å, V = 4924.9 (5) Å3, R1 = 0.0665, wR2 = 0.1306

並列摘要


Abstract The main theme of this thesis focuses on the reactivity between the reaction of dialkyl dithiophosphate (dtp) and dialkyl diselenophosphate (dsep) with monovalent copper and silver complexes. While the reaction of NH4S2P(OR)2 and [Cu2(徭ppm)2(CH3CN)2] [PF6]2 affords [Cu(-dppm)2(S2P(OR)2)2] (R = Et, 2; iPr, 1), the analogous reaction of Ag produces [Ag4(-dppm)2(S2P(OR)2)4] (R = Et, 4; iPr, 6), [Ag3(-dppm)3(S2P(OR)2)2][PF6] (R = Et, 5) and [Ag2(-dppm)2(S2P(OiPr)2)2], 7. In complexes 1, 2, and 7, a simple chelated bonding mode is observed for the dtp ligands. In cationic, trinuclear silver cage, 5, each edge of the Ag3 plane is bridged by a dppm ligand with the dtp ligands in an unusual bridged-dangling conformation for the two sulfur atoms. As a result, two of the silver atoms in 5 are trigonally coordinated by two P atoms and one S atom. Interestingly, the bonding modes of the dtp ligands for clusters 4 and 6 are also different. Whereas a bridged-chelated pattern for dtp is observed in 4, a bridged-dangling connective pattern is found in two of four dtp in 6. Surprisingly, a one-pot reaction of Ag(CH2CN)4PF6, NH4S2P(OR)2, and dppm produces tetranuclear clusters solely. When the dialkyl diselenophosphate ligands where incorporated in the reaction, the selsnium atoms abstracted by the tertiary phosphines are uncoverd and compounds of the type, M(SePPh2CH2PPh2)2(PF6), (M = Cu, 3; Ag, 8) are isolated. The intriguing 31P-NMR spectra for these mononuclear compounds are also presented. Pertinent crytallographic date for 1, 3, 4, 5, 6, and 8 are following: 1,orthorhomic, Pbcn, Z = 4, a = 18.5658(11)Å, b = 15.5449(9) Å, c = 24.486(2) Å, V = 7078.3(7) Å3, R1= 0.0474, wR2 = 0.1311; 3, orthorhomic, P21212, Z = 4, a =20.5638(11) Å, b = 39.594(2) Å, c = 11.9181(6) Å, V = 9694.2(9) Å3, R1= 0.0472, wR2 = 0.0939; 4, monoclinic, P21/n, Z = 4, a = 14.1504(11)Å, b = 17.8787(13) Å, c = 16.4680(10) Å, V = 4165.9 (5) Å3, R1= 0.0358, wR2 = 0.0936; 5, orthorhomic, Pna21, Z = 4, a = 32.200(2)Å, b = 18.5101(9) Å, c = 14.5405(7) Å, V = 8666.6 (7) Å3, R1 = 0.0366, wR2 = 0.0930; 6, orthorhomic, Pbca, Z = 4, a = 17.2672(17)Å, b = 22.7228(17) Å, c = 23.462(2) Å, V = 9205.5 (14) Å3, R1 = 0.0660, wR2 = 0.1478; 8, orthorhomic, Pcca, Z = 4, a = 20.9126(12)Å, b = 11.9598(7) Å, c = 19.6907(12) Å, V = 4924.9 (5) Å3, R1= 0.0665, Rw2= 0.1306

參考文獻


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