Synthesis of triynylcarbene complexes and of bi- and trinuclear complexes with heptatriynylidene C7-bridges

Hartbaum, Cornelia; Fischer, Helmut

Synthesis of triynylcarbene complexes and of bi- and trinuclear complexes with heptatriynylidene C7-bridges

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Datum

1999

Autor:innen

Hartbaum, Cornelia

Fischer, Helmut

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Journal of Organometallic Chemistry. 1999, 578(1-2), pp. 186-192. ISSN 0022-328X. eISSN 1872-8561. Available under: doi: 10.1016/S0022-328X(98)01121-8

Zusammenfassung

The dimethylamino(trimethylsilylhexatriynyl)carbene complex [(CO)5WC(NMe2)CCCCCCSiMe3] (2) was synthesized by two different routes: (a) by sequential reaction of the ethynylcarbene complex [(CO)5WC(NMe2)CCH] with nBuLi, CuI, and ICCCCSiMe3 and (b) by Cl2Pd(MeCN)2-catalyzed coupling of [(CO)5WC(NMe2)CCSnnBu3] with ICCCCSiMe3. Desilylation of 2 with KF/THF/MeOH afforded the hexatriynylcarbene complex [(CO)5WC(NMe2)CCCCCCH] (4). Deprotonation and coupling with ClSnnBu3 gave the C-stannylated carbene complex [(CO)5WC(NMe2)CCCCCCSnnBu3] (5). Reaction of 5 with nBuLi and [ClRu(CO)2Cp] afforded the heterobimetallic heptatriynylidene-bridged complex [(CO)5WC(NMe2)CCCCCCRu(CO)2Cp] (6). The trinuclear complex [(CO)5WC(NMe2)CCCCCC–Hg–CCCCCC(Me2N)CW(CO)5] (7) was obtained by reaction of 4 with nBuLi and HgCl2. All new compounds are stable at room temperature. Spectroscopic data suggest weak interaction of the metal centers in 6 and 7.

Fachgebiet (DDC)

540 Chemie

Schlagwörter

Carbene complexes, Binuclear complexes, Tungsten, Ruthenium, Alkynyl complexes, Coupling reaction, Bridging ligands

Zitieren

ISO 690

HARTBAUM, Cornelia, Helmut FISCHER, 1999. Synthesis of triynylcarbene complexes and of bi- and trinuclear complexes with heptatriynylidene C7-bridges. In: Journal of Organometallic Chemistry. 1999, 578(1-2), pp. 186-192. ISSN 0022-328X. eISSN 1872-8561. Available under: doi: 10.1016/S0022-328X(98)01121-8

BibTex

@article{Hartbaum1999Synth-23042,
  year={1999},
  doi={10.1016/S0022-328X(98)01121-8},
  title={Synthesis of triynylcarbene complexes and of bi- and trinuclear complexes with heptatriynylidene C7-bridges},
  number={1-2},
  volume={578},
  issn={0022-328X},
  journal={Journal of Organometallic Chemistry},
  pages={186--192},
  author={Hartbaum, Cornelia and Fischer, Helmut}
}

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