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Polynuclear Complexes with Propynylidene C3-Bridges : General Synthetic Route to Bis-, Tris-, and Tetrakis(ethynylcarbene) Complexes

Polynuclear Complexes with Propynylidene C3-Bridges : General Synthetic Route to Bis-, Tris-, and Tetrakis(ethynylcarbene) Complexes

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HARTBAUM, Cornelia, Gerhard ROTH, Helmut FISCHER, 1998. Polynuclear Complexes with Propynylidene C3-Bridges : General Synthetic Route to Bis-, Tris-, and Tetrakis(ethynylcarbene) Complexes. In: European Journal of Inorganic Chemistry. 1998(2), pp. 191-202. ISSN 1434-1948. eISSN 1099-0682

@article{Hartbaum1998Polyn-23050, title={Polynuclear Complexes with Propynylidene C3-Bridges : General Synthetic Route to Bis-, Tris-, and Tetrakis(ethynylcarbene) Complexes}, year={1998}, doi={10.1002/(SICI)1099-0682(199802)1998:2<191::AID-EJIC191>3.0.CO;2-T}, number={2}, volume={1998}, issn={1434-1948}, journal={European Journal of Inorganic Chemistry}, pages={191--202}, author={Hartbaum, Cornelia and Roth, Gerhard and Fischer, Helmut} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/23050"> <dc:contributor>Hartbaum, Cornelia</dc:contributor> <dcterms:bibliographicCitation>European Journal of Inorganic Chemistry ; (1998), 2. - S. 191-202</dcterms:bibliographicCitation> <dc:language>eng</dc:language> <dc:creator>Hartbaum, Cornelia</dc:creator> <dc:rights>deposit-license</dc:rights> <dc:creator>Roth, Gerhard</dc:creator> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-06-12T09:49:17Z</dc:date> <dc:creator>Fischer, Helmut</dc:creator> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/23050"/> <dcterms:issued>1998</dcterms:issued> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103605204-4002607-1"/> <dc:contributor>Fischer, Helmut</dc:contributor> <dc:contributor>Roth, Gerhard</dc:contributor> <dcterms:abstract xml:lang="eng">The sequential reaction of two equivalents of the dimethylamino(ethynyl)carbene complexes [(CO)5M=C(NMe2)C≡CH] [M = W (1a), Cr (1b)] with two equivalents of nBuLi and one equivalent of a transition metal dichloride, [Cl2M′(Ln)], affords trinuclear biscarbene complexes of the type [(CO)5M=C(NMe2)C≡C−M′(Ln)−C≡CC(NMe)2=M(CO)5] [M′(Ln) = Ni(PEt3)2 (2a, b), Pd(PEt3)2 (3a, b), Pt(PEt3)2 (4a, b), Fe(dmpe)2 (6a), Hg (8a), Ti(η5-C5H5)2 (9a, b)] [dmpe = 1,2-bis(dimethylphosphino)ethane]. Treatment of 1a with equimolar amounts of first nBuLi and then [Cl2M′(Ln)] results in the formation of the monosubstitution products [(CO)5W=C(NMe2)C≡CM′(Ln)] [M′(Ln) = trans-Pd(PEt3)2Cl (5a), trans-Fe(dmpe)2Cl (7a)]. Additionally, the synthesis of the heterobimetallicethynylcarbene complex [(CO)5W=C(NMe2)C≡CPd(PEt3)2C≡CH] (10a), starting from 1a and [ClPd(PEt3)2C≡CH], is described. When three equivalents of 1a are treated, first with three equivalents of nBuLi and then with one equivalent of the trihalides PCl3 or BBr3, the novel tris(ethynylcarbene) complexes [{(CO)5W=C(NMe2)C≡C}3E] [E = B (11a), P (12a)] are obtained. The reaction of four equivalents of 1a,b with four equivalents of nBuLi, followed by addition of one equivalent of a group 14 tetrachloride [M′Cl4], yields the novel tetrakis(ethynylcarbene) complexes [{(CO)5M=C(NMe2)C≡C}4M′] [M′ = Si (13a, b), Ge (14a), Sn (15a, b)]. The complexes 8a, 9a, 12a, and 15a were characterized by X-ray structural analyses. All spectroscopic and structural data suggest that the carbene fragments and the central transition metal or heteroatom in these new bis-, tris-, and tetrakis(ethynylcarbene) complexes interact only weakly.</dcterms:abstract> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-06-12T09:49:17Z</dcterms:available> <dcterms:title>Polynuclear Complexes with Propynylidene C3-Bridges : General Synthetic Route to Bis-, Tris-, and Tetrakis(ethynylcarbene) Complexes</dcterms:title> </rdf:Description> </rdf:RDF>

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