M-M bonds

M-M bonds - 1 Schedule • Last week π-Acceptor Ligands...

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Unformatted text preview: 1 Schedule • Last week: π-Acceptor Ligands and Biology CO, O 2 , N 2 and NO complexes, introduction to M-M bonds • Lecture 7: M-M bonds Slide 2/20 δ-bonds and bonding in metal clusters • Lecture 8: Rates of reaction Ligand-exchange reactions, labile and inert metal ions • Lecture 9: Redox reactions Inner and outer-sphere reactions Summary of Course – week 6 Metal-metal bonding • be able to predict bond order for M 2 L x dimers using d-electron count and σ, π and δ molecular orbital diagram • be able to predict bond order in larger metal-halide clusters using d- electron count shared over edges of cluster • be able to predict bond order in metal carbonyl clusters using 18 e- rule Reaction mechanisms Slide 3/20 Resources • Slides for lectures 7-9 • Shriver and Atkins “Inorganic Chemistry” Chapter 18.11, 21.20, 20.1-20.13 • be able to describe ligand exchange mechanisms • be able to explain role of metal charge and LFSE in rate of ligand exchange • be able to describe electron transfer reaction mechanisms • be able to predict relative rate of outer sphere reaction for different metals 2 Summary of Last Lecture Metal-N 2 complexes • N 2 is isoelectronic with CO but M-N 2 bonding is much weaker • N 2 is non-polar and bond is strong NO l Slide 4/20 NO complexes • Can bond as 1 electron donor (NO- : bent M-NO) • Can bond as 2 electron donor (NO + linear M-NO) Today’s lecture • Metal-Metal bonding in complexes Maximum Bond Order – d-Block 3d σ u 3d π g 3d δ u • the maximum bond order is...
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This note was uploaded on 05/17/2010 for the course CHEM 173b taught by Professor Ford during the Winter '10 term at UNC.

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M-M bonds - 1 Schedule • Last week π-Acceptor Ligands...

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