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'Fluxional Behaviour' in keywords Facet   section ZfN Section B  [X]
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1Author    Ekkehard Lindner, Berthold KarleRequires cookie*
 Title    Fluktuierendes Verhalten von Tris(Ether-Phosphan)-Ruthenium(II)- Komplexen Novel Basic Ligands for the Hom ogenous Catalytic C arbonylation of M ethanol, XXVII [1] Fluxional Behaviour of Tris(ether-phosphane) Ruthenium (II) Complexes  
 Abstract    Three equivalents o f the ether-phosphane li­ gands 2 a -c react with Cl2R u(PPh3)3 (1) to give the complexes rra«.s-Cl2R u (P '''0)(P ~ 0) 2 (3a-c) 
  Reference    Z. Naturforsch. 45b, 1108—1110 (1990); eingegangen am 24. Januar 1990 
  Published    1990 
  Keywords    Ruthenium Complexes, Ether-phosphanes, Fluxional Behaviour 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-1108_n.pdf 
 Identifier    ZNB-1990-45b-1108_n 
 Volume    45 
2Author    Z. NaturforschRequires cookie*
 Title    Ruthenium(II)-Komplexe mit dem neuen Liganden (Oxetanyl-2-methyl)diphenylphosphan  
 Abstract    R uthenium (II) C om plexes w ith the N ovel L igand (O xetanyl-2-m ethyl)diphenylphosphine E k k eh ard Lindner* und A ndrea M öckel The new ether-phosphine ligand (oxetanyl-2-m ethyl)diphenylphosphine (1) with strongly basic properties is obtained by reaction o f LiPPh2 with 2-chlorom ethyloxetane. Reaction o f 1 with Cl2Ru(PPh3)3 results in the formation o f the bis(chelate) com plex rra«5-Cl2R u (P " 0)2 (2). (P —O = z/'-P-coordinated; P " 0 = ^2-0,P -eoordinated). With CO only one R u -O bond is cleaved to give the monocarbonylruthenium(II) complex rra«^-Cl2R u (C 0) (P ~ 0)(P " 0) (3). 3 shows fluxional behaviour only at higher temperatures as demonstrated by 3IP {'H } N M R spectra. 
  Reference    Z. Naturforsch. 47b, 693—6 (1992); eingegangen am 4. Dezember 1991 
  Published    1992 
  Keywords    Oxetanyl-Phosphine, O-Basicity, Ruthenium Complexes, Fluxional Behaviour 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0693.pdf 
 Identifier    ZNB-1992-47b-0693 
 Volume    47 
3Author    Marion Lindemami, Reinhard Benn, Richard Goddard, Carl KrügerRequires cookie*
 Title    Friedrich-Wilhelm Grevels  
 Abstract    Extended photolysis of M(CO)ö (M = W, Mo) and methyl acrylate or dimethyl fumarate results in formation of (^ 2 -olefin)2M(CO)4 via the less stable (^ 2 -olefin)M(CO)5 complexes. X-ray structure analysis of (^-methyl acrylate)2W(CO)4 reveals the trans-staggered arrangement of the olefinic ligands. Rotational barriers are determined by variable temperature NMR spectroscopy. 
  Reference    Z. Naturforsch. 35b, 1298—1309 (1980); eingegangen am 2. Mai 1980 
  Published    1980 
  Keywords    Carbonyltungsten Olefin Complexes, Photochemistry, NMR Spectra, Fluxional Behaviour, X-ray 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1298.pdf 
 Identifier    ZNB-1980-35b-1298 
 Volume    35 
4Author    Z. NaturforschRequires cookie*
 Title    Oxidative Addition von Tetramethyldiphosphan und -arsan an C p '-S iM e2-Cp'-überbrückte Molybdän-und Wolframcarbonyl-Komplexe*  
 Abstract    O xidative A d d itio n o f T etram ethyldiphosphane and -arsane to Binuclear C p '-S iM e 2 -C p '-B rid g e d M olybdenum and T ungsten C arbonyl Com plexes** W alter A b riel+,a, G e rh a rd B aum +b, H eike B urdorf*5 und Jürgen Heck*-C a AW H chem consult, Thermal reaction o f M e2Si[Cp'M(CO)3]2 (M = M o, W; Cp' = C5H 4) with tetramethyldi­ phosphane and -diarsane gives oxidative coupling products with bridging EM e2-groups (E = P, As). With E = P discrete binuclear com pounds are obtained, which on further thermolysis afford new species o f the general formula {M e2Si(Cp'M)2(CO)3(J w-PMe2)2} (5). X -R ay struc­ ture determ ination o f 5a (M = M o) and N M R data show a PM P-heteroallylic system which is bound to the second metal. In the case o f M = W a second com pound with a mixed hydrido and dim ethylphosphido bridge can be isolated, which shows fluxionality in solution. However, the oxidative additions with tetramethyldiarsane lead to insoluble products which are assumed to be polymeric with C p '-S iM e2-C p ' as well as A sM e2 bridges linking the metal centers. 
  Reference    Z. Naturforsch. 46b, 841—8 (1991); eingegangen am 28. N ovem ber 1990 
  Published    1991 
  Keywords    Oxidative A ddition, Tetramethyldiphosphane, Tetramethyldiarsane, Crystal Structure, Fluxional Behaviour 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0841.pdf 
 Identifier    ZNB-1991-46b-0841 
 Volume    46 
5Author    Brigitte Sarry, Rolf SchaffernichtRequires cookie*
 Title    Übergangsmetallbenz -in-Komplexe. Dynamisches Verhalten von [Ta(C6H5)4(C6H4)a(Li * OC4H10)3] Transition Metal Benzyne Complexes. Fluxional Behaviour of [TAFCEHSMCEKIMLI * OC4HI0)3]  
 Abstract    Products of the reaction between MBrs and PhLi are proved to be benzyne complexes [M(C6H5)4(CeH4)2(Li-OC4Hio)n], (M = Nb, Ta, W). Analysis of the temperature dependent 1 H and 7 Li NMR Spectra of [TafCeHsMCeH^fLi • OCjHiob] are interpreted on the basis of square antiprismatic/dodecahedral structure with facial CeH4 groups. 
  Reference    Z. Naturforsch. 36b, 1238—1243 (1981); eingegangen am 30. April 1981 
  Published    1981 
  Keywords    Benzyne Transition Metal Complexes, X H NMR Spectra, 7 Li NMR Spectra, Fluxional Behaviour 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1238.pdf 
 Identifier    ZNB-1981-36b-1238 
 Volume    36