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Structural Studies of Diethylphenylphosphonite-Transition Metal Complexes


Titus, Donald Dean (1971) Structural Studies of Diethylphenylphosphonite-Transition Metal Complexes. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/G8JJ-JX74.


The synthesis and spectral properties of several tetrakis (diethylphenylphosphonite) transition metal complexes are reported.

The crystal structures of the hydrido complexes H2Fe((C6H5)P(OC2H5)2)4 and HCo((C6H5)P(OC2H5)2)4 have been determined. The phosphorus ligands are disposed nearly tetrahedrally about the metal atoms, with the hydrogen ligands occupying faces of the tetrahedra.

Infrared and n.m.r. studies of the hydrido complexes in methylcyclohexane solution indicate that the molecules are stereochemically non-rigid. The classical coordination structures used in discussing rearrangements of five- and six-coordinate complexes (octahedron, square pyramid, and trigonal bipyramid) are found to be inadequate in the discussion of the present complexes. A structure based on a tetrahedral skeleton of phosphorus atoms is presented as an alternative.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Chemistry
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Gray, Harry B. (advisor)
  • Marsh, Richard Edward (co-advisor)
Thesis Committee:
  • Unknown, Unknown
Defense Date:24 February 1971
Funding AgencyGrant Number
Record Number:CaltechTHESIS:08232017-162818079
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10387
Deposited By: Benjamin Perez
Deposited On:25 Aug 2017 16:36
Last Modified:21 Dec 2019 02:00

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