Robert J. DoedensProfessor, Chemistry Associate Dean, Physical Sciences |
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Research Interests |
Structural Inorganic Chemistry | |
| URL | www.chem.uci.edu/people/faculty/rdoedens/ | |
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Academic Distinctions | National Science Foundation Predoctoral Fellow | |
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Research Abstract |
Professor Doedens is Associate Dean of the School of Physical Sciences. He was a National Science Foundation Predoctoral Fellow at the University of Wisconsin where he received his Ph.D. degree in 1965. He obtained his B.S. degree from the University of Wisconsin, Milwaukee in 1961. Structural Inorganic Chemistry Inorganic chemists continue to produce compounds that have novel structures and that frequently exhibit unusual physical and chemical properties. Our research is concerned with investigating the structures of such compounds and with attempting to understand the influence of their structures on their properties. Specific areas of recent interest have included organometallic compounds, metal complexes of macrocyclic ligands, polyoxometallate derivatives, organic-inorganic hybrid materials, and compounds that exhibit cooperative magnetic behavior. One area of interest has been the study of transition metal complexes with unusual magnetic properties arising from interaction between two or more paramagnetic centers. These centers are frequently metal ions but one or more of them may also be ligand-centered radicals. The magnetic behavior of these complexes has been found to be highly variable, depending sensitively on the electronic structures of the interacting species and on their stereochemical relationship. Much has been learned about the influence of factors like these on the properties of isolated molecules and this information is beginning to be applied to the design and preparation of extended systems with interesting, and potentially useful, magnetic and electrical properties. Much of our recent effort has been devoted to the study of materials derived from polyoxometallates and from inorganic complexes combined with organic ligands whose stereochemical requirements are well defined. By appropriate choices of building blocks, it has proven possible to produce aggregates of varying sizes that frequently have extended structures in one-, two-, or three dimensions. Many of these structures exhibit features such as open channels, container clusters, and the like. These types of systems can also provide an environment that stabilizes unusual chemical species, two recent examples of which are new types of water clusters (H2O)n (n = 6, 8) and the previously unknown Zn2(H2NCH2C H2NH2)54+ cation.    
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| Publications |
Inorganic-Organic Hybrid Materials with Novel Framework Structures: Synthesis, Structure and Magnetic Properties of [Ni(py)4]2V10O29 and [Ni2(py)5(H2O)3]V4O12. M . Ishaque Khan, Renata Nome, Sangita Deb, James McNeely, Brant Cage, Robert J. Doedens Crystal Growth and Design, (2009), 9, 2848-2852. |
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Inorganic-Organic Hybrid Framework Materials: Synthesis and Characterization of [{Co(H2O)(L)}2V4O12] (L = pyridine, 4-methylpyridine). M. Ishaque Khan, Elizabeth Yohannes, Robert J. Doedens, Vladimir O. Golub, Charles J. OConnor Journal of Molecular Structure, (2008), 888, 19-24 |
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Mixed-Valence and Neutral Framework Inorganic-Organic Hybrid Materials: Synthesis, Characterization, and Magnetic Properties of [{Co(N(CH)4N)}V2O5)2] and [{Co(N(CH)4N)}V2O6] M. Ishaque Khan, Elizabeth Yohannes, , Vladimir O. Golub, Charles J. OConnor, Robert J. Doedens Chemistry of Materials (2007), 19, 4890-4895. |
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Synthesis and Characterization of a Polyoxovanadate Cluster Representing a new Topology. M. Ishaque Khan, Samyar Ayesh, Robert J. Doedens, Minghui Yu, and Charles J. OConnor Journal of the Chemical Society, Chemical Communications, (2005), 4658-4660. |
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Templated Synthesis of a Chiral Solid: Synthesis and Characterization of {Co(H2N(CH2)2NH2)3}[V3O9]H2O, Containing a New Type of Chiral Vanadium Oxide Chain. M. Ishaque Khan, Elizabeth Yohannes, Robert J. Doedens, Vladimir O. Golub, and Charles J. OConnor Inorganic Chemistry Communications, (2005), 8, 841-845. |
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Functionalized Metal Oxide Clusters: Synthesis, Characterization, Crystal Structures, and Magnetic Properties of a Novel Series of Fully Reduced Heteropolyoxovanadium Cationic Clusters Decorated with Organic Ligands- [MVIV6O6{(OCH2CH2)2N(CH2CH2OH)}6]X: (M = Li, X = Cl?LiCl; M = Na, X = Cl?H2O; M = Mg, X = 2Br?H2O; M = Mn, Fe, X = 2Cl ; M = Co, Ni; X = 2Cl?H2O). M. Ishaque Khan, Saadia Tabussum, Robert J. Doedens, Vladimir O. Golub and Charles J. OConnor, Inorganic Chemistry, (2004), 43, 5850-5859. |
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Inorganic-Organic Hybrid Materials Containing Porous Frameworks: Synthesis, Characterization and Magnetic Properties of the Open Framework Solids [{Co(4,4'-bipy)}V2O6] and [{Co2(4,4'-bipy)3(H2O)2}V4O12]2H2O. M. Ishaque Khan, Elizabeth Yohannes, Renata C. Nome, Samar Ayesh, Vladimir O. Golub, Charles J. OConnor, and Robert J. Doedens Chemistry of Materials, (2004), 16, 5273-5279. |
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| Link to this profile | http://www.faculty.uci.edu/profile.cfm?faculty_id=2030 | |
| Last updated | 06/22/2009 | |
