| | 1 | Author
| Klaus Angerm, Borislav Bogdanović, GudrunK. Oppetsch, Carl Krüger, RichardM. Ynott, Manfred Schwickardi, Yi-H Ung Tsay | Requires cookie* | | | Title
| Magnesiumorganische Innerkomplexe, Teil I [1] Bis(dialkylaminoalkyl)-und Bis(alkoxybutyl)magnesium-Verbindungen Organomagnesium Inner C om plexes, Part I [1] Bis(dialkylaminoalkyl)-and Bis(alkoxybutyl)m agnesium Compounds  | | | | Abstract
| A series of magnesium inner complexes has been prepared by reacting M gH2 (prepared by homogeneous catalysis) with dialkylallyl-and -3-butenylam ines and -3-butenylethers in the p re sence of catalytic amounts of Z rC l4. The m onom eric nature of bis(4-m ethoxybutyl)m agnesium has been confirmed by X-ray diffraction. The analogous syntheses of bis(3-alkoxypropyl)magnesium com pounds failed: cleavage of the allyl ether with elimination of propene occurred. This cleavage reaction is accelerated by catalytic amounts of NiCl2 or ZrC l4. | | | |
Reference
| Z. Naturforsch. 41b, 455 (1986); eingegangen am 21. N ovem ber 1985 | | | |
Published
| 1986 | | | |
Keywords
| Magnesium, Inner Complexes, Crystal Structure, X-Ray | | | |
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| default:Reihe_B/41/ZNB-1986-41b-0455.pdf | | | | Identifier
| ZNB-1986-41b-0455 | | | | Volume
| 41 | |
| 2 | Author
| Gerhard Bremer3, Roland Boeseb, Mustafa Keddoa, Thomas Kruck3 | Requires cookie* | | | Title
| Dialkylchalkogenidverbrückte Carbonylzweikernkomplexe des Typs | | | | Abstract
| [M]2ER2 mit M = {CpMn(CO)2} und {Cr(CO)5}; E = S, Se, Te; R = Me oder R2 = (CH2)3 bzw. (CH2)4; Röntgenstrukturanalyse von [CpMn(CO)2]2S(CH2)3 Dialkylchalcogenide-Bridged Dinuclear Carbonyl Complexes of the Type [M]2ER2 with M = {CpMn(CO)2} and {Cr(CO)5}; E = S, Se, Te; R = Me or R2 = (CH2)3, (CH2)4; X-Ray-Structure Analysis of [CpMn(CO)2]2S(CH2)3 The reaction o f C pM n(C O)2T H F or C r(C O)sT H F with alkylchalcogenides E R 2 (E = S, Se, Te; R = M e or R 2 = (C H 2)3, (C H 2)4) in the molar ratio of 2:1 gives alkylchalcogenide-bridged dinuclear com plexes [C pM n(C O)2]2E R 2 and [C r(C O)5]2E R 2. The heteronuclear com plex C p (C O)2Mn — (u-SM e2) -C r (C O) 5 can be synthesized by reacting C pM n(C O)2SM e2 with C r(C O)5TH F. X-ray structure analysis o f the com pound [CpM n(CO)2]2S(C H 2) 3 dem onstrates the bridging character o f the alkylchalcogenides. | | | |
Reference
| Z. Naturforsch. 41b, 981—986 (1986); eingegangen am 24. Februar/25. April 1986 | | | |
Published
| 1986 | | | |
Keywords
| Synthesis, C halcogenide-Bridged Carbonyl C om plexes, X-Ray | | | |
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| default:Reihe_B/41/ZNB-1986-41b-0981.pdf | | | | Identifier
| ZNB-1986-41b-0981 | | | | Volume
| 41 | |
| 3 | Author
| Michael Zettlitzer, Heindirk Tom Dieck, Lutz Stamp | Requires cookie* | | | Title
| Reactions of N-Silated Endiamines, I Transition Metal Complexes of l,3-Diaza-2-sila-4-cyclopentenes | | | | Abstract
| 1,3-Diaza-2-sila-4-cyclopentenes 1 (D ISC), which are electron-rich and easily oxidizable ole fins, form strongly coloured, but poorly soluble 1:1 adducts with cuprous halides, while silver trifluoromethylsulfonate oxidizes 1. Much more soluble and again strongly coloured complexes of stoichiometry LPdX2, (L)15PdX2 and L 2PdX2 are formed from 1 and palladium halides. The well-crystallizing adduct (PdCl-,-L)o 3a was chosen for an X-ray structure analysis (monoclinic, space group P 21c; a = 10.215(3), b = 14.681(3), c -23.642(5) A , ß = 101.31(2)°; Z = 8 ; R = 0.054), which revealed an almost planar D ISC ligand in an oblique ?z2(C=C)-coordination relative to the 7r-plane. Structural data and rather peculiar spectroscopic properties encourage a comparison of 3a with complexes, in which an electron-rich olefin is split to give a bis(carbene) ligand system. The electronic reasons for the splitting of electron-rich olefins at d8 metals are discussed under symmetry considerations. | | | |
Reference
| Z. Naturforsch. 41b, 1230—1238 (1986); eingegangen am 12. Februar/9. Juni 1986 | | | |
Published
| 1986 | | | |
Keywords
| Endiamines, Palladium Complexes, X-Ray, Electron-Rich Olefins, Carbene-Type Complexes | | | |
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| default:Reihe_B/41/ZNB-1986-41b-1230.pdf | | | | Identifier
| ZNB-1986-41b-1230 | | | | Volume
| 41 | |
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