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  • 1
    Electronic Resource
    Electronic Resource
    Preparation and characterization of molybdenum(IV)-alkyne complexes containing bulky aryloxide or arenethiolate ligands (1987)
    s.l. : American Chemical Society
    Inorganic chemistry 26 (1987), S. 1615-1621 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00257a029
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  • 2
    Electronic Resource
    Electronic Resource
    Basic cluster reactions. 5. Capping reactions of RuCo2(CO)11 (1983)
    s.l. : American Chemical Society
    Organometallics 2 (1983), S. 1048-1049 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om50002a021
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  • 3
    Electronic Resource
    Electronic Resource
    Basic cluster reactions. 3. Hetero site reactivities in dicobalt diruthenium tridecacarbonyl (1983)
    s.l. : American Chemical Society
    Organometallics 2 (1983), S. 183-184 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om00073a042
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  • 4
    Electronic Resource
    Electronic Resource
    Preparation, structure, and coordination chemistry of molybdenum(IV) tetrathiolates, Mo[S-2,4,6-C6H2(CHMe2)3]4 (1985)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 107 (1985), S. 5795-5797 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00306a033
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  • 5
    Electronic Resource
    Electronic Resource
    Darstellung und Chemie des Clusters SRuCo2(CO)9 (1984)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 1039-1051 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Chemistry of the Cluster SRuCo2(CO)9SRuCo2(CO)9 (2) results in good yield by heating of stoichiometric amounts of Co2(CO)8 and Ru3(CO)12 in the presence of ethyl mercaptan under synthesis gas pressure. In 2 up to three CO ligands can easily be replaced by PMe2Ph and up to two CO ligands by AsMe2MCp(CO)3 (M = Cr, Mo, W). The monosubstituted derivates SRuCo2(CO)8L with L = PMe2Ph (3) or L = AsMe2MCp(CO)3 (6 - 8) appear as two isomers, of which we assume substitution at ruthenium for the one formed first and subsequent transfer of the ligand to cobalt. The tetranuclear complexes SRuCo2(CO)8 - AsMe2MCp(CO)3 (6 - 8) undergo metal exchange upon heating under CO to yield the chiral clusters SRuCoMCp(CO)8 (12 - 14, M = Cr, Mo, W). Of these the Mo and W compounds are better accessible by reaction between 2 and [MCp(CO3]2. From SruCoMoCp(CO)8 (13) and optically active phosphane ligands mixtures of diastereoisomers SRuCoMoCp(CO)7L (18: L = ( - )-PMePrPh; 19: L = PPh2O( - )-Menthyl result. During the formation of 19 a slight enrichment of the ( - )-diastereoisomer occurs. The diastereoisomers can be separated chromatographically, but not yet reconverted to the pure enantiomers 13.
    Notes: SRuCo2(CO)9 (2) entsteht in guter Ausbeute beim Erhitzen stöchiometrischer Mengen von Co2(CO)8 und Ru3(CO)12 in Gegenwart von Ethylmercaptan unter Synthesegas-Druck. In 2 lassen sich bis zu drei CO-Liganden durch PMe2Ph und bis zu zwei CO-Liganden durch AsMe2MCp(CO)3 (M = Cr, Mo, W) leicht ersetzen. Die Monosubstitutionsderivate SRuCO2(CO)8L mit L = PMe2Ph (3) bzw. L = AsMe2MCp(CO)3 (6 - 8) treten in Form von zwei Isomeren auf, bei denen wir für das zuerst gebildete Substitution am Ruthenium und anschließend Wanderung des Liganden zum Cobalt annehmen. Die Vierkernkomplexe SRuCo2(CO)8 - AsMe2MCp(CO)3 (6 - 8) unterliegen beim Erhitzen unter CO einem Metallaustausch zu den chiralen Clustern SRuCoMCp(CO)8 (12 - 14, M = Cr, Mo, W). Von diesen sind die Mo- und W- Verbindungen besser durch Umsetzung von 2 mit [MCp(CO)3]2 zugänglich. Aus SRuCoMoCp(CO)8 (13) und optisch aktiven Phosphanliganden entstehen Diastereomerengemische SRuCoMoCp(CO)7L (18: L = (-)PMePrPh; 19: L = PPh2O(-)-Menthyl). Bei der Bildung von 19 tritt eine geringe Anreicherung des (-)-Diasteromeren ein. Die Diasteromeren sind chromatographisch zu trennen, jedoch bisher nicht in die reinen Enantiomeren 13 zurückzuverwandeln.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19841170318
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  • 6
    Electronic Resource
    Electronic Resource
    μ3-Acetylen- und μ3-Vinyliden-verbrückte RuCo2(CO)9-Cluster (1985)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 2858-2873 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: μ3-Acetylene and μ3-Vinylidene Bridged RuCo2(CO)9 ClustersBy capping reactions under mild conditions from RuCo2(CO)11 and internal (MeCCMe, EtCCEt, PhCCPh) or terminal (HCCH, HCCMe, HCCt-Bu, HCCPh) alkynes the clusters RuCo2(CO)9(RCCR) (2a-c) and RuCo2(CO)9(HCCR) (3a-d) are formed. In boiling hexane the complexes 3 are transformed by H migration into the vinylidene bridged clusters RuCo2(CO)9(CCHR) (4a-d). Dynamic 1H NMR spectroscopy resulted in activation barriers of 63-66 kJ/mol for the fluctuation of the alkyne ligand on the RuCo2 triangle. By crystal structure analyses of RuCo2(CO)9(μ3-L) with L=PhCCPh (2c), HCCt-Bu (3c), CCHt-Bu (4c), and CCHPh (4d) the significant erection and small C-C bond extension of the C2-ligand associated with the acetylene-vinylidene rearrangement were revealed.
    Notes: Durch Überdachungsreaktion bei milden Bedingungen entstehen aus RuCo2(CO)11 und internen (MeCCMe, EtCCEt, PhCCPh) bzw. terminalen (HCCH, HCCMe, HCCt-Bu, HCCPh) Alkinen die Cluster RuCo2(CO)9(RCCR) (2a-c) und RuCo2(CO)9(HCCR) (3a-d). In siedendem Hexan wandeln sich die Komplexe 3 unter H-Wanderung in die Vinyliden-verbrückten Cluster RuCo2(CO)9(CCHR) (4a-d) um. Dynamische 1H-NMR-Spektroskopie ergab für die Fluktuation der Acetylenliganden über dem RuCo2-Dreieck Aktivierungsbarrieren zwischen 63 und 66 kJ/mol. Durch Kristallstrukturanalyse von RuCo2(CO)9(μ3-L) mit L=PhCCPh (2c), HCCt-Bu (3c). CCHtBu (4c) und CCHPh (4b) wurde die starke Aufrichtung und geringe C-C-Bindungsaufweitung des C2-Liganden beim Acetylen-Vinyliden-Übergang erfaßt.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19851180725
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  • 7
    Electronic Resource
    Electronic Resource
    Zwei neue Metallcarbonyle: Darstellung und Struktur von RuCo2(CO)11 und Ru2Co2(CO)13 (1985)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 1133-1142 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Two New Metal Carbonyls: Preparation and Structure of RuCo2(CO)11 and Ru2Co2(CO)13RuCo2(CO)11 (1) results from the stoichiometric and heterogeneous reaction between KCo(CO)4 and [Ru(CO)3Cl2]2 in water. Its decomposition in hexane at 65°C yields Ru2Co2(CO)13 (2). The crystallographically determined molecular structures of both compounds show that their metal atom cores are located inside approximately regular ligand polyhedra.
    Notes: RuCo2(CO)11 (1) entsteht durch stöchiometrische heterogene Umsetzung von KCo(CO)4 und [Ru(CO)3Cl2]2 in Wasser. Seine Zersetzung bei 65°C in Hexan liefert Ru2Co2(CO)13 (2). Die kristallographisch bestimmten Molekülstrukturen beider Verbindungen lassen erkennen, daß ihre Metallatom-Kerne sich in annähernd regelmäßigen Ligandenpolyedern befinden.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19851180330
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  • 8
    Electronic Resource
    Electronic Resource
    Umsetzungen von Ru3(CO)12 mit funktionellen Arsenliganden (1980)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 1799-1805 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Ru3(CO)12 with Functional Arsenic LigandsFrom Ru3(CO)12 and Me2AsH, Me2AsCl, and Me2AsNMe2 no Ru3 derivatives could be obtained. Instead [(CO)3 Ru-AsMe2]2 (3a) and [Cl(CO)3 Ru—AsMe2]2 (4a) were isolated in moderate yields. With organometal dimethylarsenides, however, the planned substitution of one CO group from Ru3(CO)12 allowed the preparation of new tetranuclear complexes 6a - c, during which in a side reaction also (CO)4Ru—MoCp(CO)2(μ-AsMe2) (9a) was formed. With L=Cp(CO)2 Fe—AsMe2 also the penta- and hexanuclear complexes Ru3(CO)10L2 (7) and Ru3(CO)9L3 (8) were accessible.
    Notes: Aus Ru3(CO)12 und Me2AsH, Me2AsCl und Me2AsNMe2 ließen sich keine Ru3-Derivate erhalten. Statt dessen wurden in mäßiger Ausbeute [(CO)3Ru-AsMe2]2 (3a) und [Cl(CO)3 Ru-AsMe2]2 (4a) isoliert. Mit Organometall-dimethylarseniden ließen sich jedoch durch Substitution einer CO-Gruppe von Ru3(CO)12 gezielt neue Vierkernkomplexe 6a - c darstellen, wobei in einer Nebenreaktion auch (CO)4Ru—MoCp(CO)2 (μ-AsMe2) (9a) entstand. Mit L=Cp(CO)2Fe—AsMe2 waren auch die Fünf- und Sechskernkomplexe Ru3(CO)10L2 (7) und Ru3 (CO)9L3 (8) zugänglich.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19801130515
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  • 9
    Electronic Resource
    Electronic Resource
    Zweifacher Metallaustausch an den Clustern SFeCo2(CO)9 und SRuCo2(CO)9 (1984)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 2429-2437 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Double Metal Exchange in the Clusters SFeCo2(CO)9 and SRuCo2(CO)9Single metal exchange in SFeCo2(CO)9 (1) and SRuCo2(CO)9 (2) had yielded the mixed metal clusters SFeCoMCp(CO)8 (3, M = Cr, Mo, W) and SRuCoMCp(CO)8 (4, M = Mo, W). For the iron containing clusters 3 the metal exchange by the Co-As elimination method could be applied once more: via the intermediates SFeCoMCp(CO)7 - AsMe2 - M′Ln (5 - 7, M′ = Cr, Mo, W, Mn, Fe) the clusters SFeMM′Cp2(CO)7 (10) were formed, however only for M, M′ = Mo, W. The ruthenium containing clusters 4 reacted by the direct method with [M′Cp(CO)3]2 (M = Mo, W) to form the clusters SRuMM′Cp2(CO)7 (11, M, M′ = Mo, W).
    Notes: Einfacher Metallaustausch hatte aus SFeCo2(CO)9 (1) und SRuCo2(CO)9 (2) die Hetero-Cluster SFeCoMCp(CO)8 (3, M = Cr, Mo, W) und SRuCoMCp(CO)8 (4, M = Mo, W) ergeben. Auf die eisenhaltigen Cluster 3 ließ sich der Metallaustausch nach der Co-As-Eliminierungs-Methode erneut anwenden: über die Zwischenstufen SFeCoMCp(CO)7 - AsMe2 - M′Ln (5 - 7, M′ = Cr, Mo, W, Mn, Fe) entstanden, allerdings nur für M, M′ = Mo, W, die Cluster SFeMM′Cp2(CO)7 (10). Die rutheniumhaltigen Cluster 4 reagierten nach der Direktmethode mit [M′Cp(CO)3]2 (M′ = Mo, W) zu den Clustern SRuMM′Cp2(CO)7 (11, M, M′ = Mo, W).
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19841170714
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  • 10
    Electronic Resource
    Electronic Resource
    Überdachungsreaktionen von RuCo2(CO)11 mit Haupt- und Nebengruppenelement-Reagenzien (1986)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 119 (1986), S. 2566-2581 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Capping Reactions of RuCo2(CO)11 with Main Group and Transition Element ReagentsThe reactive cluster RuCo2(CO)11 was treated with numerous inorganic, organo-element, and organic reagents which are potential precursors of μ3-bridging four electron ligands. Capping could be achieved with Co(CO)4- forming RuCo3(CO)12-, with RPH2 (R=Me, Ph, Tol) forming RuCo2(CO)9PR (3a-c), with MeAsH2 forming RuCo2(CO)9AsMe (4), with H2S, HSEt, or S8 forming RuCo2(CO)9S (5), with Ph2Se2 leading to RuCo2(CO)9Se (6), with TolC≡WCp(CO)2 forming RuCo2W(CTol)Cp(CO)10 (8), and with LnM—C≡CPh (LnM=Cp(CO)2Fe, Cp(CO)2Ru, Cp(CO)3W) forming RuCo2M(C2Ph)(CO)8Ln (9, 10, 12). With tBuC≡P und Cp(CO)2Mo≡MoCp(CO)2 fragmentation products were obtained, tBuNC led to CO substitution. The new tetranuclear clusters RuCo2W(CTol)Cp(CO)10 (8), RuCo2-Fe(C2Ph)Cp(CO)10 (9), and RuCo2W(C2Ph)Cp(CO)11 (12) were confirmed by crystal structure analyses.
    Notes: Der reaktive Cluster RuCo2(CO)11 wurde mit zahlreichen anorganischen, elementorganischen und organischen Reagenzien umgesetzt, die potentielle Vorläufer von μ3-verbrücken-den Vierelektronenliganden sind. Überdachung konnte erzielt werden mit Co(CO)4- zu RuCo3(CO)12-, mit RPH2 (R=Me, Ph, Tol) zu RuCo2(CO)9PR (3a-c), mit MeAsH2 zu RuCo2(CO)9AsMe (4), mit H2S, HSEt und S8 zu RuCo2(CO)9S (5), mit Ph2Se2 zu RuCo2(CO)9Se (6), mit TolC≡WCp(CO)2 zu RuCo2W(CTol)Cp(CO)10 (8) und mit LnM—C≡CPh (LnM=Cp(CO)2Fe, Cp(CO)2Ru, Cp(CO)3W) zu RuCo2M(C2Ph)(CO)8Ln, (9, 10, 12). Mit tBuC≡P und Cp(CO)2Mo≡MoCp(CO)2 wurden Fragmentierungsprodukte erhalten, mit tBuNC trat CO-Substitution ein. Die neuen Vierkerncluster RuCo2W(CTol)Cp(CO)10 (8), RuCo2Fe(C2Ph)Cp(CO)10 (9) und RuCo2W(C2Ph)Cp(CO)11 (12) wurden durch Kristallstrukturanalyse belegt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19861190815
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