Download Comprehensive Organometallic Chemistry 3ed Vol 01 by D M P Mingos; Robert H Crabtree PDF

By D M P Mingos; Robert H Crabtree

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By D M P Mingos; Robert H Crabtree

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Unfortunately, the precise contribution of  and -backbonding to the overall interaction is generally unknown. It is, therefore, pertinent to consider in a qualitative manner the backbonding capabilities of some of the more commonly encountered ligands. Tertiary phosphine ligands (PR3), while commonly regarded as strong -donor ligands, also possess some -acceptor character. 85,86 For the purpose of determining the MLlXxZz description, however, PR3 ligands are classified as L ligands, which is consistent with the commonly encountered zerovalent description of M(PR3)n complexes.

Focusing on the -backbonding interactions, both nitrosyl Classification of Organotransition Metal Compounds Figure 33 Partial MO diagram for a trans dinitrosyl compound focusing on the -interactions. Since the two sets of NO * orbitals on each ligand interact with the same metal d orbitals, the metal is only required to contribute two electrons to the bonding. M dative covalent interactions (not shown), each nitrosly may be classified as an LX ligand. ligands interact with the same pair of d orbitals, such that the metal is required to contribute only two electrons.

Focusing on the -backbonding interactions, both nitrosyl Classification of Organotransition Metal Compounds Figure 33 Partial MO diagram for a trans dinitrosyl compound focusing on the -interactions. Since the two sets of NO * orbitals on each ligand interact with the same metal d orbitals, the metal is only required to contribute two electrons to the bonding. M dative covalent interactions (not shown), each nitrosly may be classified as an LX ligand. ligands interact with the same pair of d orbitals, such that the metal is required to contribute only two electrons.

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