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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Reactivity and structural patterns of phenylphosphines in acetylene and acetylide carbonyl trinuclear ruthenium clusters
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Reactivity and structural patterns of phenylphosphines in acetylene and acetylide carbonyl trinuclear ruthenium clusters

机译:乙炔和乙酰羰基苯基膦酰基羰基羰基羰基羰基三核钌簇的反应性和结构图案

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The acetylene [Ru-3(mu-CO)(CO)(9){mu(3)-eta(2)-(//)-HC C-R}] (1a: R = C(Me)=CH2): 1b: R = (sic) C=CH-(CH2)(3)-CH2) and the acetylide [Ru-3(mu-H)(CO)(9){mu(3)-eta(2)-(perpendicular to)-C C-R)] (2a: R = C(Me)= CH2; 2b: R = (sic) C=CH-(CH2)(3)-CH2) clusters have been synthesized from the reaction of [Ru-3(CO)(10)(NCMe)(2)] with 2-methyl-1-buten-3-yne and 1-ethynylcyclohexene respectively. The reactions of the corresponding parallel acetylene la or lb with triphenylphosphine or diphenylmethylphosphine yielded four isostructural compounds [Ru-3(mu-CO)(CO)(8)(L){mu(3)-eta(2)-(//)-HC C-R}] (3a1: L = PPh3, 3a2: L = PPh2Me, R = C(Me)=CH2; 3b1: L = PPh3, 3b2: L = PPh2Me, R = (sic) C=CH-(CH2)(3)-CH2) where, the alkynes are still coordinated to the metallic fragment as acetylene groups in a mu(3)-eta(2) parallel fashion. Also, the isomer compounds [Ru-3(mu-H)(CO)(8)(L)[mu(3)-eta(2)-(perpendicular to)-C C-R)] (4a1 and 5a1: L = PPh3, 4a2 and 5a2: L = PPh2Me, R = C(Me)=CH2; 4b1 and 5b1: L = PPh3, 4b2 and 5b2: L = PPh2Me, R = (sic) C=CH-(CH2)(3)-CH2); and the disubstituted phenylphosphine clusters [Ru-3(mu-H)(CO)(7)(L)(2){mu(3)-eta(2)-(perpendicular to)-C C-R}] (6a1: L = PPh3, 6a2: L = PPh2Me, R = C(Me)=CH2; 6b1: L = PPh3, 6b2: L = PPh2Me, R = (sic) C=CH-(CH2)(3)-CH2) were formed during each reaction. In these compounds, the parallel-acetylene group undergoes an oxidative addition and a rearrangement of the coordinated organic fragment to a mu(3)-eta(2) perpendicular coordination mode of the C-C axis by breaking acetylene C-H bond to give a hydride ligand in each case. The synthesis of clusters [Ru-3(mu-CO)(CO)(8)(PPh3){mu(3)-eta(2)-(//)-HC C-C6H2-2,4,5-Me-3}] (3c1), [Ru-3((mu-H)(CO)(8)(PPh3){mu(3)-eta(2)-(perpendicular to)-C C-C6H2-2,4,5-Me-3}] (4c1 and 5c1) and [Ru-3(mu-H)(CO)(7)(PPh3)(2){mu(3)-eta(2)-(perpendicular to)-C C-C6H2-2,4,5-Me-3}] (6c1) are also described. All compounds have been characterized in solution by infrared spectroscopy and by 1(H), C-13{H-1} and P-31
机译:乙炔的[Ru-3(MU-CO)(CO)(9){亩(3)-ETA(2) - (//) - HC CR}](1A:R = C(Me)的= CH 2):图1b:R =(原文如此)C = CH-(CH 2)(3)-CH 2)和乙炔化的[Ru-3(MU-H)(CO)(9){亩(3)-ETA(2) - (垂直于)-C CR)](2A:R = C(Me)的= CH 2; 2B:R =(原文如此)C = CH-(CH 2)(3)-CH 2)的簇已经从的反应的[Ru合成-3(CO)(10)(NCMe)(2)]与2-甲基-1-丁烯-3-炔和1- ethynylcyclohexene分别。乙炔Ia或Ib与三苯基膦或二苯基甲基膦对应的并行的反应产生4个同结构的化合物的[Ru-3(MU-CO)(CO)(8)(L){亩(3)-ETA(2) - (// )-HC CR}](3A1:L = PPH 3,3A2:L = PPh2Me,R = C(Me)的= CH 2; 3B1:L = PPH 3,3B2:L = PPh2Me,R =(原文如此)C = CH-( CH 2)(3)-CH 2),其中,所述炔烃仍然协调,以在MU金属片段作为乙炔基团(3)-ETA(2)平行的方式。另外,异构体的化合物的[Ru-3(MU-H)(CO)(8)(L)微米(3)-ETA(2) - (垂直于)-C CR)](4A1和5A1:L = PPH 3,4A2和5A2:L = PPh2Me,R = C(Me)的= CH 2; 4B1和5B1:L = PPH 3,4B2和5B2:L = PPh2Me,R =(原文如此)C = CH-(CH 2)(3) -CH 2);和二取代苯基簇的[Ru-3(MU-H)(CO)(7)(L)(2){亩(3)-ETA(2) - (垂直于)-C CR}](6A1:L = PPH 3,6A2:L = PPh2Me,R = C(Me)的= CH 2; 6B1:L = PPH 3,6B2:L = PPh2Me,R =(原文如此)C = CH-(CH 2)(3)-CH 2)形成每个反应中。在这些化合物中,并行乙炔基团经历的氧化加成和协调有机片段的至亩重排(3)-ETA(2)垂直协调CC轴的模式通过破坏乙炔CH键,得到氢化物配位体中每个案例。 (//) - - HC C-C6H2-2,4,5-ME簇的[Ru-3(MU-CO)(CO)(8)(PPH3){亩(3)-ETA(2)的合成中-3}](3C1),的[Ru-3((MU-H)(CO)(8)(PPH3){亩(3)-ETA(2) - (垂直于)-C C-C6H2-2, 4,5-ME-3}](4C1和5C1)和的[Ru-3(MU-H)(CO)(7)(PPH3)(2){亩(3)-ETA(2) - (垂直于)-C C-C6H2-2,4,5-ME-3}](6C1)是也有描述。所有化合物已被其特征在于用红外光谱溶液,并通过1(H),C-13 {H-1}和P-31

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