Reaktionen der Aren(carbonyl)ruthenium-Komplexe [C6Me6Ru(CO)Cl2] und [(Mes)Ru(CO)Cl2] mit Alkyl- und Allyl-Grignardreagenzien. Die Kris
The reaction of [C6Me6Ru(CO)Cl2] (1) with RCH2CH2MgI (R H, CH3, C2H5)gives a mixture of products from which the olefinruthenium(0) complexes [C6Me6Ru(CO)(CH2CHR)] (4, 8, 10), the mono- and dialkylruthenium(II) compounds [C6Me6Ru(CO)(C2H5)I] (7) and [C6Me6Ru(CO)(CH2CH2R)2] (5, 9, 11), and the diio...
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Published in | Journal of organometallic chemistry Vol. 454; no. 1-2; pp. 247 - 255 |
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Main Authors | , , |
Format | Journal Article |
Language | German |
Published |
Elsevier B.V
27.07.1993
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Online Access | Get full text |
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Summary: | The reaction of [C6Me6Ru(CO)Cl2] (1) with RCH2CH2MgI (R H, CH3, C2H5)gives a mixture of products from which the olefinruthenium(0) complexes [C6Me6Ru(CO)(CH2CHR)] (4, 8, 10), the mono- and dialkylruthenium(II) compounds [C6Me6Ru(CO)(C2H5)I] (7) and [C6Me6Ru(CO)(CH2CH2R)2] (5, 9, 11), and the diiodo derivative [C6Me6Ru(CO)I2] (6) have been isolated. Treatment of [(Mes)Ru (CO)Cl2] (2) with C2H5Mgl and n-C3H7MgI gives besides [(Mes)Ru(CO)I2] (13) the alkyl(iodo)ruthenium(II) compounds [(Mes)Ru(CO)(C2H5)I] (12) and [(Mes)Ru(CO)(n-C3H7)I] (14). In contrast, the reaction of 2 with C2H5MgBr yields the new ethene complex [(Mes)Ru(CO)(C2H4)] (15) after chromatography on Al2O3. Compound 1 reacts with C3H5MgBr to give two isomers of composition {[η5-C 6Me6(CH2CHCH2)]Ru(η3-C3H5)(CO)} in which the π-allyl ligand is coordinated either in the endo (16a) or exo (16b) position. Upon prolonged stirring of a benzene solution of 16a/16b (3/1) at room temperature, 16b is formed quantitatively. The crystal structure of 16b has been determined (monoclinic space group P21/n (No. 14) with a = 11.717(3), b = 12.783(2), c = 11.962(3) Å, β = 98.27(1)°, V = 1773.0 Å3 and Z = 4). ab]Die Reaktion von [C6Me6Ru(CO)Cl2] (1) mit RCH2CH2MgI (R H, CH3, C2H5) führt zu einem Produktgemisch, aus dem die Olefinruthenium(0)-Komplexe [C6Me6Ru(CO)(CH2CHR)] (4, 8, 10),die Mono- und Dialkylruthenium(II)-Verbindungen [C6Me6Ru(CO)(C2H5)I] (7) und [C6Me6Ru(CO)(CH2CH2R)2] (5, 9, 11) sowie das Diiodo-Derivat [C6Me6Ru(CO)I2] (6) isoliert werden. Bei der Einwirkung von C2 H5MgI und n-C3H7MgI auf [(Mes)Ru(CO)Cl2] (2) erhält man neben [(Mes)Ru(CO)I2] (13) die Alkyl(iodo)ruthenium(II)-Verbindungen [(Mes)Ru(CO)(C2H5)I] (12) und [(Mes)Ru(CO)(n-C3H7)I] (14). Im Gegensatz dazu liefert die Umsetzung von 2 mit C2H5MgBr nach Chromatographie an Al2O3 den Ethen-Komplex [(Mes) Ru(CO)(C2H4)] (15). Die Verbindung 1 reagiert mit C3H5MgBr zu zwei Isomeren der Zusammensetzung {η5- C6Me6(CH2CHCH2)]Ru(η3-C3H5)(CO)}, in denen der π-Allyl-Ligand einmal in endo-Stellung (16a) und einmal in exo-Stellung (16b) koordiniert ist. Nach längerem Rühren einer Benzollösung von 16a/16b (3/1) bei Raumtemperatur entsteht quantitativ 16b. Die Kristallstruktur von 16b wurde bestimmt (monoklin, Raumgruppe P21/n (Nr. 14), a = 11.717(3), b = 12.783(2), c = 11.962(3) Å, β = 98.27(1)°, V = 1773.0 Å3 und Z = 4). |
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ISSN: | 0022-328X 1872-8561 |
DOI: | 10.1016/0022-328X(93)83248-T |