Synthetic and structural chemistry of transition metals, catalysis,
polynuclear metal complexes, metalloporphyrins, fullerene chemistry,
bioinorganic chemistry.
FULLERENE CHEMISTRY AND MATERIALS
We are involved in studies of the
structure and chemical reactivity of the fullerenes (C60,
C70, C84) and their derivatives. We have
utilized the reversible binding of Vaska's complex,
Ir(CO)CI(PPh3)2, to fullerenes as a structural
probe. Such adduct formation produces ordered single crystals suitable
for X-ray diffraction and has yielded the first three dimensional metric
structural information on the higher fullerenes C70 and
C84. Current research plans focus on obtaining fullerene
based materials that display useful properties. Fullerene epoxides
have been shown to undergo cathodic electropoly-merization to form
tough, redox active films that may be of technological importance in
battery, microsensor, and microelectronic devices. Efforts to obtain
other fullerene derivatives suitable for polymer formation are under
active investigation. The chemical behavior of fullerene fragments
(curved organic hydrocarbons) is also under study.
Balch, A.L., V.J. Catalano, J.W. Lee, M.M. Olmstead and S.R. Parkin.
(C70)Ir(CO)Cl(PPh3)2.
The Synthesis and Structure of an Organometallic Derivative of a Higher Fullerene.
J. Amer. Chem. Soc., 1991, 113, 8953.
Balch, A.L., V.J. Catalano, J.W. Lee, and M. Olmstead.
Supramolecular Aggregation of a C60
Iridium Complex Involving Phenyl Chelation of the Fullerene.
J. Amer. Chem. Soc., 1992, 114, 5455-5457.
Balch, A.L., J.W. Lee and M.M. Olmstead.
Isolation and Structural Characterization of a Product of Double Addition to C70:
C70{Ir(CO)Cl(PPhMe2)2}2 3C6H6.
Angewandte Chemie, 1992, 31, 1356-1358.
Balch, A.L., J.W. Lee, B.C. Noll and M.M. Olmstead.
A Double Addition Product of C60:
C60{Ir(CO)Cl(PMe2Ph)2}2.
Individual Crystallization of Two Conformational Isomers.
J. Amer. Chem. Soc., 1992, 114, 10984-10985.
Balch, A.L., J.W. Lee, B.C. Noll and M.M. Olmstead.
Disorder in a Crystalline Form of Buckministerfullerene:
C60 4 C6H6.
J. Chem. Soc., Chem. Commun., 1993, 56-58.
Balch, A. L., A.S. Ginwalla, J.W. Lee, B.C. Noll and M.M. Olmstead.
Partial Separation and Structural Characterization of C84 Isomers by Crystallization of
(C84)Ir(CO)Cl(P(C6H5)3)2.
J. Amer. Chem. Soc., 1994, 116, 2227-2228.
Balch, A. L., D.A. Costa, J.W. Lee, B.C. Noll and M.M. Olmstead.
Directing Effects in a Fullerene Epoxide Addition. Formation and Structural Characterization of
(C60O)Ir(CO)Cl(P(C6H5)3)2.
Inorg. Chem., 1994, 33, 2071-2072.
SUPRAMOLECULAR CHEMISTRY
We are concerned with identification of the
factors involved in interactions between molecules to form multimolecular
aggregates. Extensive efforts are underway to identify new structural
motifs in molecular solids that account for attractive interactions between
unlike molecules. We are exploring the ability of unlike molecules to
co-crystallize as a means of preparing complex supramolecular assemblies.
Examples include solids comprised of:
- Pd6Cl12 and
aromatic hydrocarbons,
- fullerenes and porphyrins,
- gold(I) complexes
and organic electron acceptors.
Balch, A.L., V.J. Catalano, J.W. Lee, M.M. Olmstead and S.R. Parkin.
(C70)Ir(CO)Cl(PPh3)2.
The Synthesis and Structure of an Organometallic Derivative of a Higher Fullerene.
J. Amer. Chem. Soc., 1991, 113, 8953.
Balch, A.L., V.J. Catalano, J.W. Lee, and M. Olmstead.
Supramolecular Aggregation of a C60
Iridium Complex Involving Phenyl Chelation of the Fullerene.
J. Amer. Chem. Soc., 1992, 114, 5455-5457.
Balch, A.L., J.W. Lee and M.M. Olmstead.
Isolation and Structural Characterization of a Product of Double Addition to C70:
C70{Ir(CO)Cl(PPhMe2)2}2 3C6H6.
Angewandte Chemie, 1992, 31, 1356-1358.
Balch, A.L., J.W. Lee, B.C. Noll and M.M. Olmstead.
A Double Addition Product of C60:
C60{Ir(CO)Cl(PMe2Ph)2}2.
Individual Crystallization of Two Conformational Isomers.
J. Amer. Chem. Soc., 1992, 114, 10984-10985.
Balch, A.L., J.W. Lee, B.C. Noll and M.M. Olmstead.
Disorder in a Crystalline Form of Buckministerfullerene:
C60 4 C6H6.
J. Chem. Soc., Chem. Commun., 1993, 56-58.
Balch, A. L., A.S. Ginwalla, J.W. Lee, B.C. Noll and M.M. Olmstead.
Partial Separation and Structural Characterization of C84 Isomers by Crystallization of
(C84)Ir(CO)Cl(P(C6H5)3)2.
J. Amer. Chem. Soc., 1994, 116, 2227-2228.
Balch, A. L., D.A. Costa, J.W. Lee, B.C. Noll and M.M. Olmstead.
Directing Effects in a Fullerene Epoxide Addition. Formation and Structural Characterization of
(C60O)Ir(CO)Cl(P(C6H5)3)2.
Inorg. Chem., 1994, 33, 2071-2072.