This critical review presents a comprehensive study of transition-metal carboxylate clusters which may serve as secondary building units (SBUs) towards construction and synthesis of metal–organic frameworks (MOFs). We describe the geometries of 131 SBUs, their connectivity and composition. This contribution presents a comprehensive list of the wide variety of transition-metal carboxylate clusters which may serve as secondary building units (SBUs) in the construction and synthesis of metal–organic frameworks. The SBUs discussed here were obtained from a search of molecules and extended structures archived in the Cambridge Structure Database (CSD, version 5.28, January 2007) which included only crystals containing metal carboxylate linkages (241 references).

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Secondary building units, nets and bonding in the chemistry of metal–organic frameworks

ion from a primary OH group of glyc-erol. 223,231 A similar mechanism was proposed manyyears ago for alcohol oxidation on Pt/C, involving asecond step, the transfer of a hydride ion to the Ptsurface (Scheme 11). 8,87,237 We consider it more feasible that the rate-deter-mining step is the cleavage of the C-H bond at theR-carbon atom. A similar mechanism is now generallyaccepted for Au electrodes (Scheme 12). 238 Despite thestructural differences between Au nanoparticles andan extended Au electrode surface, there are alsosimilarities, such as the critical role of aqueousalkaline medium and the absence of deactivation dueto decomposition products (CO and C x H y frag-ments). 239,240 An important question is the nature of active siteson Au nanoparticles. Electrooxidation of ethanol onAu nanoparticles supported on glassy carbon re-quired the partial coverage of Au surface by oxides. 241 Another analogy might be the model proposed for COoxidation. 219,242,243 According to this suggestion, theactive site consists of an ensemble of metallic Auatoms and a cationic Au

Oxidation of Alcohols with Molecular Oxygen on Solid Catalysts

Magnetochemistry: advances in theory and experimentation

Ruthenium-Catalyzed Reactions for Organic Synthesis.

Infrared spectroscopic identification of species arising from reactive adsorption of carbon oxides on metal oxide surfaces

Magnetic exchange interactions in transition metal dimers. 10. Structural and magnetic characterization of oxalate-bridged, bis(1,1,4,7,7-pentaethyldiethylene triamine)oxalatodicopper tetraphenylborate and related dimers. Effects of nonbridging ligands and counterions on exchange interactions

Magnetic exchange interactions in transition-metal dimers. 12. Structural and magnetic characterization of the di-.mu.(1,3)-azido complex [Cu2(Me5dien)2(N3)2](BPh4)2 and similar di-.+-.(1,3)-azido copper(II) dimers. Unusual zero-field splitting in the electron paramagnetic resonance spectra

Timothy R. Felthouse

Papers

Magnetic exchange interactions in transition metal dimers. 10. Structural and magnetic characterization of oxalate-bridged, bis(1,1,4,7,7-pentaethyldiethylene triamine)oxalatodicopper tetraphenylborate and related dimers. Effects of nonbridging ligands and counterions on exchange interactions

Magnetic exchange interactions in transition-metal dimers. 12. Structural and magnetic characterization of the di-.mu.(1,3)-azido complex [Cu2(Me5dien)2(N3)2](BPh4)2 and similar di-.+-.(1,3)-azido copper(II) dimers. Unusual zero-field splitting in the electron paramagnetic resonance spectra

Structural Studies of Some Multiply Bonded Diruthenium Tetracarboxylate Compounds

Molecular and electronic structures of two quadruply bonded ditungsten compounds and a dimolybdenum homolog

Structural studies of three tetrakis(carboxylato)dirhodium(II) adducts in which carboxylate groups and axial ligands are varied