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'Dinuclear Complexes' in keywords
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1999 (2)
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1978 (2)
1Author    Egbert Keller, Heinrich VahrenkampRequires cookie*
 Title    Stereochemie der Metall-Metall-Bindung: Darstellung und Struktur von Co2(CO)4C5H5P(CH3)2  
 Abstract    The title complex 4 was prepared from 7?-C3H5Co(CO)3 and »/-C5H5(CO)Co-P(CH3)2H. It completes the series of PR2-and AsR2-bridged homodinuclear complexes C^CO^CsHs-As(CH3)2, Mn2(CO)6C5H5As(CH3)2, and Fe2(CO)5C5H5P(CH3)2. Its crystal structure ana-lysis reveals the systematic variation of the ligand distribution along the series which depends only on the number of ligands present and not on given coordination geometries. The metal-metal bond length in 4 is mainly determined by the stereochemical require-ments of the bridging phosphido ligand. 
  Reference    Z. Naturforsch. 33b, 537—541 (1978); eingegangen am 27. Februar 1978 
  Published    1978 
  Keywords    Dinuclear Complexes, Metal-Metal Bonds, Stereochemistry 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0537.pdf 
 Identifier    ZNB-1978-33b-0537 
 Volume    33 
2Author    Wolfgang Malisch, Peter Panster, Robert AlsmannRequires cookie*
 Title    Transition Metal Substituted VB Element Systems, 12 [1] Mono-and Dinuclear Transition Metal Complexes with Dihalogenarsenic Groups  
 Abstract    The reaction of ASCI3 with the transition metal anions [r^-CsHstCO^M] 9 (M = Cr, Mo, W) yields the arsenic transition metal complexes -C5H5(CO)3M-AsCl2, which readily form Jrans-77 5 -C5H5(CO)2LM-AsCl2 in the presence of phosphorus donors [L = P(OCH3)3, P(CH3)2C6H5]. Addition of M(CO)s-groups on the trivalent arsenic occurs with THF • M'(CO)s (M' = Cr, Mo) leading to the arsenic bridged dinuclear complexes ^-CsHstCO^Cr-AsC^M^CO^. Controlled Cl/F-exchange at the bridged species can be achieved by use of AgBF4. 
  Reference    Z. Naturforsch. 33b, 899—905 (1978); eingegangen am 21. Juni 1978 
  Published    1978 
  Keywords    Arsenic Transition Metal Complexes, Ligand Exchange, Dinuclear Complexes 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0899.pdf 
 Identifier    ZNB-1978-33b-0899 
 Volume    33 
3Author    W. Olfdieter, A. Schenk, Christine Neuland-Labude, FrauRequires cookie*
 Title    M (IV )  
 Abstract    -M (O)-Zweikernkomplexe (M = Ti, Zr, M' = Cr, M o, W) mit verbrückenden Phosphinocyclopentadienid-, Chlorid-und Thiolatliganden [1] M (IV)—M '(O) Dinuclear Complexes (M = Ti, Zr, M ' = Cr, M o, W) with Bridging Phosphinocyclopentadienide, Chloride, and Thiolate Ligands [1] A series o f ligand-bridged dinuclear complexes [MM'Cl(/<-Cl)(//-C5H4PR-,)2(CO)3] (M = Ti, Zr, M' = Cr, M o, W, R = C6H 5, 4-C6H4CH3) was synthesized from the mononuclear pre­ cursors MC12(C5H 4PR2)2 and M'(CO)3L3. Donor ligands L cleave the chloro bridge either re-versibly (L = acetonitrile) or irreversibly (L = CO, P(OM e)3) with formation o f the adducts [M M 'Cl2(//-C 5H4PR 2)2(CO)3L], At titanium a terminal CL ligand can be replaced by 'BuO~ whereas MeS~ substitutes both terminal and bridging Cl". The dinuclear complexes [M M '(SM e)(//-SM e)(//-C,H 4PRo),(CO)3] thus formed are inert towards CO or P(OM e),. 
  Reference    Z. Naturforsch. 46b, 573—5 (1991); eingegangen am 12. Oktober 1990 
  Published    1991 
  Keywords    Group IV M etals, Group VI Metals, Dinuclear Complexes 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0573.pdf 
 Identifier    ZNB-1991-46b-0573 
 Volume    46 
4Author    Takashi Maikawaa, M. Otohiro, N. Akanoa, RyuichiA. Rakaw Aa, Gen-Etsu Matsubayashi3, WasukeM. OribRequires cookie*
 Title    Preparation and Spectroscopic Properties of the [Re2(C3S4Se)5]2' Anion Complex and Electrical Conductivities of the Oxidized Species [C3S4Se2' = l,3-Dithiole-2-selone-4,5-dithiolate(2-)]  
 Abstract    The dinuclear rhenium (IV) com plexes with the C3S4Se-ligand [l,3-dithiole-2-selone-4,5-dithiolate(2-)], [PPh4]2-(1) and [NEt4]2[R e2(C3S4S e)s] (2), were prepared. Complex 2 was oxidized by a reaction with [Fe(C5H 5)2][PFA] or [TTF]3[BF4]2 (TTF + = the tetrathiafulvalen-ium radical cation) and by the current-controlled electrolysis to yield [NEt4]x[Re2(C3S4Se)5] (jc = 0.15 and 0.5) and [TTF][Re2(C3S4Se)<;]. The compounds exhibit electrical conductivities of 3.3 x 10 3 -9.3 x 10 4 S c m 1 for compact pellets at room temperature. Electrochemical and spectroscopic properties o f the com plexes are discussed on the basis of cyclic voltamme-try and ESR. XPS and IR spectra as well as the magnetic susceptibility of the TTF salt. 
  Reference    Z. Naturforsch. 50b, 1748—1752 (1995); received April 9. 1995 
  Published    1995 
  Keywords    Dinuclear Complexes, R henium (IV) Complexes Dithiolate, Magnetic Susceptibility Electrical Conductivity 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1748.pdf 
 Identifier    ZNB-1995-50b-1748 
 Volume    50 
5Author    Katja Heinze, Gottfried Huttner, Laszlo ZsolnaiRequires cookie*
 Title    Tuning the Energy of the NIR Absorption of Dinuclear Triphos-Cobalt-Complexes  
 Abstract    Dinuclear Co(III) complexes of the type [(triphos)Co(C6X2Z' Z2Z3Z4)Co(triphos)]2+ (Z1 ~4 = O, NR, S; R = H, Me; X = H, Cl, Br, I; 1 -62+) have been prepared and characterized by MS, IR, NMR, cyclovoltammetric and UV/VIS/NIR measurements and by X-ray analyses (12+, 3a2+ and 42+). Their redox behaviour and the energy of their low energy LMCT bands was studied and compared to the properties of the mononuclear complexes [(triphos)Co(C6H4Z 'Z 2)]+ (Z1-2 = O, NH, S). 
  Reference    Z. Naturforsch. 54b, 1147—1154 (1999); received June 2 1999 
  Published    1999 
  Keywords    Dinuclear Complexes, NIR Dyes, Cobalt, Tripodal Ligands, Bridging Ligands 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1147.pdf 
 Identifier    ZNB-1999-54b-1147 
 Volume    54 
6Author    Silke Buchler, Franc Meyer, Albrecht Jacobi, Peter Kircher, Laszlo ZsolnaiRequires cookie*
 Title    Novel Dinucleating Ligand Systems Containing Two Adjacent Coordination Compartments of the Potential Triamidoamine-Type -Nickel(II) and Cobalt(II) Coordination Chemistry  
 Abstract    The preparation of novel dinucleating pyrazolate ligands H5L3 -H5L8 carrying chelating side arms with appending secondary amine functions is reported. Following different synthetic routes, either CH2CF3, C6H2F3 , or CftF? moieties can be introduced as substituents at the termi­ nal nitrogen atoms. These systems are reminiscent of two coupled coordination compartments of the potential triamidoamine-type. Crystallographic analyses of a series of bimetallic complexes of the CH2CF3-substituted ligand H5L4 with NiCh and C0 CI2 reveal manifold coordination modes in the solid state, resulting from the facile detachment of a single or several N-donor sites from the metal centers. Coordination number sets {4/6} (in H5L4Co2CU) and {5/6} (in H4L4Ni2Cl3, H4L4Co2Cl3 and H5L4Ni2CL) are thus observed. In the non-deprotonated HsL-type systems the remaining protons are found to be scavenged by a pyrazolate-N (in H5L4Ni2CU) or an amine function of a ligand side arm (in H ^ C o iC U). 
  Reference    Z. Naturforsch. 54b, 1295—1306 (1999); received June 18 1999 
  Published    1999 
  Keywords    Dinuclear Complexes, N-Ligands, Nickel, Cobalt, Solid-State Structures 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1295.pdf 
 Identifier    ZNB-1999-54b-1295 
 Volume    54