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[I.] Carbon monoxide reduction by sixteen electron d-zero tantalum complexes [II.] Acrylonitrile cyclodimerization by tris(triphenylphosphine) tetramethylene Ni(II)

Citation

Berg, Beckie E. (1979) [I.] Carbon monoxide reduction by sixteen electron d-zero tantalum complexes [II.] Acrylonitrile cyclodimerization by tris(triphenylphosphine) tetramethylene Ni(II). Master's thesis, California Institute of Technology. http://resolver.caltech.edu/CaltechTHESIS:04072010-082613027

Abstract

[Part I] The sixteen electon, d-zero complexes Ta(COT)Me_3 and (η^5-C_5Me_5)Ta(C_3H_5)Me_3 were prepared and treated with carbon monoxide. The prep of Ta(COT) Me_3 gave irreproducibly small yields and upon treatment with CO paramagnetic material was observed. The prep of (η^5-C_5Me_5)Ta(C_3H_5)Me_3 resulted in yellow crystals in a red oil and these could not be separated. (η ^5C_5Me_5)Ta(C_3H_4Me)Me_3 was then made. This complex decomposes to the trimethylene methane species (η^5-C_5Me_5)Ta(C_3H_3Me)Me_2, and upon treatment with CO gave an unknown white solid product. [Part II] Tris(triphenylphoshine) tetramethylene Ni(II) was made and treated with acrylonitrile. 1, 2 dicyanocyclobutane was produced in a cis:trans mixture of 45:55 and was isolated by preparative GC. The product was rarely observed and the reaction of nickel metallocycle with acrylonitrile was not catalyzed by acid, base, or Ni(O).

Item Type:Thesis (Master's thesis)
Subject Keywords:Chemistry
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Thesis Availability:Restricted to Caltech community only
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • Unknown, Unknown
Defense Date:29 June 1979
Record Number:CaltechTHESIS:04072010-082613027
Persistent URL:http://resolver.caltech.edu/CaltechTHESIS:04072010-082613027
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5697
Collection:CaltechTHESIS
Deposited By: Tony Diaz
Deposited On:19 Apr 2010 18:24
Last Modified:26 Dec 2012 03:24

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