Sita, Lawrence R. - University of Maryland - Department of Chemistry & Biochemistry

个人简介

B.S. (Honors), Chemistry, 1981, Carnegie Mellon University, Pittsburgh, PA B.S.(honors) June 1981 Ph.D., Organic Chemsitry, 1985, Massachusetts Institute of Technology, Cambridge, MA (w. Satoru Masamune). Postdoctoral, 1985-1986, Massachusetts Institute of Technology, Cambridge, MA (w. Richard R. Schrock).

研究领域

Transition and Main Group Metal Inorganic and Organometallic Chemistry, New Synthetic Methodology, Catalyst Development, Polymers, Chemically-Tailored Surfaces and Interfaces, Molecular and Mesoscopic Self-Assembly, New Nanofabrication Processes

近期论文

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Keane, A. J.; Yonke, B. L.; Masakazu, H.; Zavalij, P. Y. and Sita, L. R. Fine-Tuning the Energy Barrier for Metal-Mediated Dinitrogen N≡N Bond Cleavage. J. Am. Chem. Soc. 2014. 136, 9906-9909. DOI: 10.1021/ja505309j Yonke, B. L.; Reeds, J. P.; Fontaine, P.; Zavalij, P. Y. and Sita, L. R. Catalytic Production of Isocyanates via Orthogonal Atom and Group Transfers Employing a Shared Formal Group 6 M(II)/M(IV) Redox Cycle. Organometallics 2014, 33, 3239-3242. DOI: 10.1021/om500532s Crawford, K. E. and Sita, L. R. Regio- and Stereosprecific Cyclopolymerization of Bis(2-propenyl)diorganosilanes and the Two-State Stereoengineering of 3,5-cis,isotactic Poly(3,5-methylene-1-silacyclohexane)s. ACS Macro Lett. 2014, 3, 506. DOI: 10.1021/mz500126r Keane, A. J.; Zavalij, P. Y. and Sita, L. R. N-N Bond Cleavage of MId-Valent Ta(IV) Hydrazido and Hydrazidium Complexes Relevant to the Schrock Cycle for Dinitrogen Fixation. J. Am. Chem. Soc. 2013 135, 9580. DOI: 10.1021/ja402804k Crawford, K. E. and Sita, L. R. Stereoengineering of Poly(1,3-methylenecyclohexane) via Two-State Livig Coordination Polymerization of 1,6-Heptadiene. J. Am. Chem. Soc. 2013, 135, 8778-8781. DOI: 10.1021/ja402262x Wei, J.; Hwang, W.; Zhang, W. and Sita, L. R. Dinuclear Bis-Propagators for the Stereoselective Living Coordinative Chain Transfer Polymerization of Propene. J. Am. Chem. Soc. 2013, 135, 2132-2135. DOI: 10.1021;ja312463f Yonke, B. L.; Keane, A. J.; Zavalij, P. Y. and Sita, L. R. Mononuclear Tantalum(IV, d1) imido Complexes Supported by the Monocyclopentadienyl, Amidinate and Guanidinate Ligand sets as Models to Explore Dinitrogen Fixation by "end-on-bridged" Dinuclear {{Ta(IV, d1)]}2(µ-η1:η1-N2). Organometallics 2012, 31, 345-355. DOI: 10.1021/om200961r Giller, C.; Gururajan, G.; Wei, J.; Zhang, W.; Hwang, W.; Chase, B. D.; Rabolt, J. F. and Sita, L. R. Synthesis, Characterization, and Electrospinning of Architecturally-Descrete Isotactic-Atactic-Isotactic Triblock Stereoblock Polypropene Elastomers. Macromolec. 2011, 44, 471. DOI: 10.1021/ma102134y Sita, L.R. Duality in Catalyst Desgin: The Synergistic Coupling of Steric and Stereoelectronic Control over Polylefin Microstructure. Angew. Chem. Int. Ed. 2011, 50, 6963-6965. DOI: 10.1002/anie.201101913 Yonke, B. L.; Reeds, J. P.; Zavalij, P. Y. and Sita, L. R.; Catalytic Degenerate and Non-degenerate Oxygen Atom Transfers Employing N2O and CO2 and a MII/MIV Cycle Mediated by Group 6 MIV Terminal Oxo Complexes. Angew. Chem. Int. Ed. 2011, 50, 12342-12346. DOI: 10.1002/anie.201106074 Reeds, J. P.; Yonke, B. L.; Zavalij, P. Y. and Sita, L. R.; Carbon Monoxide-Induced N-N Bond Cleavage of Nitrous Oxide that is Competitive with Oxygen Atom Transfer to Carbon Monoxide as Mediated by a Mo(II)/Mo(IV) Catalytic Cycle. J. Am. Chem. Soc. 2011, 133, 18602-18605. DOI: 10.1021/ja208669s Wei, J.; Zhang, W. and Sita, L. R.; Aufbaureaktion Redux: Scalable Production of Precision Hydrocarbons from AlR3 (R=Et or iBu) by Dialkyl Zinc Mediated Ternary Living Coordinative Chain-Transfer Polymerization. Angew. Chem. Int. Ed. 2010, 49, 1768-1772. DOI: 10.1002/ange.200906658 Wei, J.; Zhang, W.; Wickham, R. and Sita, L. R.; Programmable Modulation of Co-monomer Relative Reactivities of Living Coordination Polymerization through Reversible Chain Transfer between "Tight" and "Loose" Ion Pairs. Angew. Chem. Int. Ed. 2010, 49, 9140-9144. DOI: 10.1002/ange.201004709 Fontaine, P. P.; Yonke, B. L.; Zavalij, P. Y. and Sita, L. R. Dinitrogen Complexation and Extent of N2 Activation within the Group 6 "End-On-Bridged" Dinuclear Complexes, {(η5-C5Me5)M[N(i-Pr)C(Me)N(i-Pr)]}2(µ-η1:η1-N2) (M = Mo and W). J. Am. Chem. Soc. 2010, 132, 12273-12285. DOI: 10.1021/ja100469f