Abstract
A new 2-(diphenylphosphino)ethyl propyl ether as hemilabile hybrid ether-phosphine ligand [Ph2PCH2CH2OCH2CH2CH3] was made available. The structure of the titled compound was characterized by elemental analysis, IR, 31P-NMR, 1H-NMR, 13C-NMR, UV-visible spectroscopy and EI-MS.
Highlights
There has been a considerable interest in the design and use of so-called hemilabile ligands [1,2,3,4,5]
The oxygen atom can be displaced by an incoming substrate
Ether phosphines are capable of making available and protecting vacant coordination sites and lead to an improvement in both catalytic and stoichiometric reactions [5,6,7,8,9] The strength of the metal oxygen bond inruthenium complexes depends on the O nucleophilicity of the ether moiety, the ring size of the cyclic ether, the number and position of the oxygen atoms in the ring, and the basicity at the metal
Summary
There has been a considerable interest in the design and use of so-called hemilabile ligands [1,2,3,4,5]. They contain a soft donor (e.g., phosphorus) closely coordinated to the transition metal with a hard donor (e.g., oxygen) forming only a weak contact to the metal center. Due to this feature, the (ether) oxygen atom can be displaced by an incoming substrate. Ether phosphines are capable of making available and protecting vacant coordination sites and lead to an improvement in both catalytic and stoichiometric reactions [5,6,7,8,9] The strength of the metal oxygen bond in (ether phosphine)ruthenium complexes depends on the O nucleophilicity of the ether moiety, the ring size of the cyclic ether, the number and position of the oxygen atoms in the ring, and the basicity at the metal
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