Preparation of photodegradable oligomers containing metal-metal bonds using ADMET

Ginger V. Shultz, Orion B. Berryman, Lev N. Zakharov, David R. Tyler

Research output: Contribution to journalArticlepeer-review

Abstract

ADMET was evaluated as a method for preparing organometallic polymers with metal-metal bonds in the main chain. The Cp 2Mo 2CO 4(Ph 2P(CH 2) 6CH=CH 2) 2 complex was synthesized, and the X-ray crystal structure is reported. The molecule did not undergo ADMET polymerization with Grubbs' or Schrock's catalysts. In a control experiment to test if the Ph 2P(CH 2) 6CH=CH 2 ligand was interfering with the ADMET reaction, the phosphine was reacted with Grubbs' 2nd generation catalyst. The dimerized metathesis product Ph 2P(CH 2) 6CH=CH(CH 2) 6PPh 2 was obtained with no observed degradation or deactivation of the catalyst. To test the inherent ADMET reactivity of the Ph 2P(CH 2) 6CH=CH 2 ligand when it is bonded to a metal center, the mononuclear cis-Mo(CO) 4(Ph 2P(CH 2) 6CH=CH 2) 2 complex was synthesized and polymerized using Grubbs' 2nd generation catalyst. These control experiments suggest that the inability of Cp 2Mo 2CO 4(Ph 2P(CH 2) 6CH=CH 2) 2 to polymerize is not due to electronic effects pertaining to the C=C unit of the Ph 2P(CH 2) 6CH=CH 2 ligand. Accordingly, steric effects are implicated in the inability of the Cp 2Mo 2CO 4(Ph 2P(CH 2) 6CH=CH 2) 2 to polymerize by ADMET.

Original languageEnglish
Pages (from-to)149-154
Number of pages6
JournalJournal of Inorganic and Organometallic Polymers and Materials
Volume18
Issue number1
DOIs
StatePublished - Mar 2008

Keywords

  • ADMET
  • Metal-metal bond
  • Photochemically Degradable polymer

Fingerprint

Dive into the research topics of 'Preparation of photodegradable oligomers containing metal-metal bonds using ADMET'. Together they form a unique fingerprint.

Cite this