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Research has been conducted on the group 14 trifluorovinyl compounds. The preparation of these compounds via the reaction of triphenylelement halide with trifluorovinyllithium at low temperature is described.

Research has been conducted on the organomercurial compounds. The preparation of these compounds from 2-bromobenzaldehyde and their characterization via the use of elemental analysis, NMR and infrared spectroscopy are discussed.

The pulsed EPR technique of double electron electron resonance (DEER) is used for probing the distribution of intramolecular end-to-end distances. The results have shown that porphyrin-based molecular wires are shape-persistent, but their shapes can be deformed by binding to multivalent ligands.

The design, preparation, structure and anion-binding properties of the indolocarbazole-containing interlocked structure are described. The selectivity of the [2]rotaxane for chloride is described in terms of its unique interlocked binding cavity, which is defined by the macrocycle isophthalamide and indolocarbazole N-H protons.

Coordination solids are designed and developed based on a tetrahedral organic linker, tetrakis[4-(carboxyphenyl)oxamethyl]methane, as a building block to generate metal-organic frameworks (MOFs) with metal salts and organic pillars. High selectivity for C[O.sub.2] over [H.sub.2] and [N.sub.2] is a necessity if these materials should be used for C[O.sub.2] separations from synthesis gas and flue gas mixtures.

The synthesis and separation of the 1,6- and 1,7-isomers of N,N'-bis(n-butyl)dimorpholino-3,4:9,10-perylenetetracarboxylic acid bisimide are described. The 1,7-isomer of N,N'-bis(n-butyl)dimorpholino-3,4:9,10-perylenetetracarboxylic acid bisimide has undergone a two-electron oxidation process, which is in contrast with the behavior of both the corresponding 1,6-isomer and other related amino-substituted perylene bis-imide species.

The preparation and detailed studies of five-coordinate cobalt(II) complexes, incorporating two bidentate iminopyrrolyl ligands and a P[Me.sub.3] or a THF ligand are described. The compounds show structures varying from the unusual axially compressed trigonal bipyramidal (TBP) to distorted square pyramidal (SP) geometries and different magnetic properties.

The synthesis and characterization of aluminum(III) porphyrin building blocks 1-isonic and 1-nic as well as solution and solid -state evidence for the corresponding one dimensional coordination polymers are reported. The results indicated that the ligands exhibiting other spatial relationships between oxygen and nitrogen donors could lead to the formation of a range of new geometries for the porphyrin coordination polymers.

The crystal structures of the two isostructural metal-organic salts, [(4-chloropyridinium).sub.2][Co[X.sub.4] (X - Cl, Br), are determined at different temperatures and pressures. The studies have shown that since the effect of difference in anion size is removed by application of pressure, the anisotropy in dimensions has shown that the N-H...[X.sub.2]Co hydrogen bonds and Co-X...Cl-C halogen bonds are strongly attractive for X = Cl rather than X = Br.

An alternative method is described for controlling the structure of a product in a solvothermal reaction of coordination polymers. It is shown that adding a solubilizing agent such as 2,2'-bipyridine can be used to circumvent some of the problems linked with the use of hydrophobic ionic liquids.

A study is conducted to explore the structural and electronic analogies between [Rh.sub.6][([PR.sub.3]).sub.6][H.sub.12]][[[BAr.sup.F.sub.4].sub.2]. These new cluster species arise from simple sequential addition of electrons to the low-lying set of orbitals present in the parent cluster.