Synthesis and Reactivity of Metallaradicals
{'Code': '03090005', 'Directorate': {'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'LongName': 'Division Of Chemistry'}}
{'SignBlockName': 'Jon F. Parcher'}
The focus of this project in the Inorganic, Bioinorganic and                    Organometallic Chemistry Program is the preparation of new                      organometallic compounds which contain unpaired electrons. The                  new compounds are expected to include some which are useful as                  catalysts for the oxidation of organic molecules.                                                                                                               Chromium(III) alkylidenes will be prepared by deprotonation of                  cationic alkyl precursors. Full characterization and                            elucidation of their reactivity will be pursued in parallel to                  their application in ring opening metathesis polymerization of                  functionalized olefins. The preparation of alkyls of                            chromium(II) and chromium(IV), and of paramagnetic chromium                     hydrides, will be attempted also, and the reactivities of these                 new compounds toward insertion of small unsaturated molecules                   into the carbon-chromium bond will be explored. Previous work                   in the area of cobalt(IV) and cobalt(V) alkyls will be extended                 to new alkyl groups and new coordination geometries. For                        example, stabilization of these high oxidation states by                        coordination to the pentamethylcyclopentadienyl ligand will be                  explored. Another extension will aim at the preparation of                      tetrahedral cobalt oxo complexes, which would be used in                        oxidations of organic substrates. Tris(pyrazolyl)borate ligands                 will be utilized to stabilize high-valent cobalt in an attempt                  to develop oxygenation catalysts which utilize dioxygen.
{'FirstName': 'Klaus', 'LastName': 'Theopold', 'EmailAddress': 'theopold@udel.edu', 'StartDate': '02/15/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Cornell University', 'CityName': 'Ithaca', 'ZipCode': '148502820', 'PhoneNumber': '6072555014', 'StreetAddress': '373 Pine Tree Road', 'CountryName': 'United States', 'StateName': 'New York', 'StateCode': 'NY'}
{'Code': '1966', 'Text': 'SYNTHETIC INORGANIC'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8820354.xml'}