Present State of the Art and Future Challenges in the Hydrodesulfurization of Polyaromatic Sulfur Compounds

The chemistry of transition metals with three-membered ring heterocycles.

Activation process of [NiFe] hydrogenase elucidated by high-resolution X-Ray analyses: conversion of the ready to the unready state

Cubane-type sulfido clusters containing noble metals are newcomers compared with the corresponding clusters of the first transition series metals and molybdenum, which have been extensively studied in relation to metalloenzymes and industrial hydrodesulfurization catalysts. This Account reviews the recent progress in studies on the synthesis and reactivities of these noble metal cubane-type clusters. One of the goals in this new area lies in development of the unique catalysis of the noble metals embedded in the robust and redox-active cubane-type cores. Rational synthetic approaches indispensable to the preparation of such effective cluster catalysts are discussed to a significant extent.

Synthesis and reactivities of cubane-type sulfido clusters containing noble metals.

Stereochemical aspects of phosphor-1,1-dithiolato metal complexes (dithiophosphates, dithiophosphinates): Coordination patterns, molecular structures and supramolecular associations—I

Desulfurization of Organic Sulfur Compounds Mediated by a Molybdenum/Cobalt/Sulfur Cluster

Desulfurization of thiophene and thiophenol by a sulfido-cobalt-molybdenum cluster: toward a homogeneous hydrodesulfurization catalyst

Molecular Structures of the Bimetallic Sulfido Clusters Cp'2Mo2Co2S4(CO)2, Cp'2Mo2Co2S3(.mu.3-PPh)(CO)2, Cp'3Mo3CoS4(CO), and Cp'3Mo3FeS4(SH)

Coupling of alkynes on a cluster core : reaction of Cp'2Mo2Co2(CO)4S3 with alkynes

Cyclopentadienylniobium and -molybdenum phosphorodithioate complexes. X-ray crystal structures of CpNbCl3[S2P(OPr-iso)2], CpNbCl(.mu.-Cl)2Nb[S2P(OPr-iso)2]Cp, and cis-Cp'Mo(CO)2[S2P(OPr-iso)2]

Umar Riaz

Papers

Desulfurization of Organic Sulfur Compounds Mediated by a Molybdenum/Cobalt/Sulfur Cluster

Desulfurization of thiophene and thiophenol by a sulfido-cobalt-molybdenum cluster: toward a homogeneous hydrodesulfurization catalyst

Molecular Structures of the Bimetallic Sulfido Clusters Cp'2Mo2Co2S4(CO)2, Cp'2Mo2Co2S3(.mu.3-PPh)(CO)2, Cp'3Mo3CoS4(CO), and Cp'3Mo3FeS4(SH)

Coupling of alkynes on a cluster core : reaction of Cp'2Mo2Co2(CO)4S3 with alkynes

Cyclopentadienylniobium and -molybdenum phosphorodithioate complexes. X-ray crystal structures of CpNbCl3[S2P(OPr-iso)2], CpNbCl(.mu.-Cl)2Nb[S2P(OPr-iso)2]Cp, and cis-Cp'Mo(CO)2[S2P(OPr-iso)2]