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Typical Ligands (Alkyl ligands)

Typical Ligands (Alkyl ligands). Bassi, JACS , 1971 , 3787. Not that many homoleptic TM alkyl complexes. [WMe 6 ] = melts 30 o C [TiMe 4 ] = decomposes -40 o C [TiBn 4 ] = stable above room temperature (see crystal structure ). More sterically hindered complexes generally more stable.

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Typical Ligands (Alkyl ligands)

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  1. Typical Ligands (Alkyl ligands) Bassi, JACS, 1971, 3787 • Not that many homoleptic TM alkyl complexes. [WMe6] = melts 30 oC [TiMe4] = decomposes -40 oC [TiBn4] = stable above room temperature (see crystal structure ) • More sterically hindered complexes generally more stable.

  2. Typical Ligands (Alkyl ligands) • Alkyl complexes far more stable if they lack b-hydrogens. • Common alkyl groups unable to undergo b-hydride elimination: • Me, CH2Ph • CH2CMe3, CH2SiMe3, CH(SiMe3)2 • CH2CF3 • 1-adamantyl, 6-norbornyl (see diagrams ) • Related ligands:

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