[Transition metal mediated transformations of small molecules]. Progress report

Technical Report · Thu Oct 01 00:00:00 EDT 1992

DOI:https://doi.org/10.2172/10188286· OSTI ID:10188286

Sen, A

Work on organotransition metal chemistry, homogeneous and heterogeneous catalysis is summarized. Several cationic palladium(II) complexes with bulky phosphine or pyridine ligands were discovered that are highly selective catalysts for linear dimerization of vinyl monomers and linear polymerization of p-divinylbenzene, the reactions proceeding through a carbocationic mechanism. Our studies were continued on alternating olefin-carbon monoxide copolymers. The copolymerization reaction and reactivity of copolymers were examined. New catalytic systems for alternating copolymerization of {alpha}-olefins with CO were discovered. In the case of styrene derivatives, tactic copolymers were obtained. Poly(ethylenepyrrolediyl) derivatives were synthesized from alternating ethylene-carbon monoxide copolymer and become electronic conductors when doped with iodine. A catalytic system for direct synthesis of polyureas and polyoxamides from and diamines was also discovered. Pt metal catalyzed the oxidation of ethers, esters, and amines to carboxylic acids and the oxidation of olefins to 1,2-diols. Anaerobic and aerobic decomposition of molybdenum(VI)-oxoalkyl compounds were studied for heterogeneous oxidation of alkanes and olefins on Mo(VI)-oxide surfaces. Synthesis of polymer-trapped metal, metal oxide, and metal sulfide nanoclusters (size <1--10 nm) was studied.

• Research Organization: Pennsylvania State Univ., University Park, PA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-84ER13295
• OSTI ID: 10188286
• Report Number(s): DOE/ER/13295-6; ON: DE93001725
• Resource Relation: Other Information: PBD: [1992]
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
TRANSITION ELEMENT COMPOUNDS
CATALYTIC EFFECTS
ORGANOMETALLIC COMPOUNDS
DIMERIZATION
CATALYSIS
POLYMERIZATION
COPOLYMERIZATION
OXIDATION
PROGRESS REPORT
CATALYSTS
HETEROGENEOUS CATALYSIS
PALLADIUM COMPLEXES
STYRENE
VINYL MONOMERS
PLATINUM
MOLYBDENUM COMPLEXES
ALKANES
ALKENES
400201
360601
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
PREPARATION AND MANUFACTURE