The civilian, commercial, and defense sectors of most advanced industrialized nations are faced with a tremendous set of environmental problems related to the remediation of hazardous wastes, contaminated groundwaters, and the control of toxic air contaminants. For example, the slow pace of hazardous waste remediation at military installations around the world is causing a serious delay in conversion of many of these facilities to civilian uses. Over the last 10 years problems related to hazardous waste remediation have emerged as a high national and international priority.

Environmental Applications of Semiconductor Photocatalysis

The Cationminus signpi Interaction.

C–H activation has surfaced as an increasingly powerful tool for molecular sciences, with notable applications to material sciences, crop protection, drug discovery, and pharmaceutical industries, among others. Despite major advances, the vast majority of these C–H functionalizations required precious 4d or 5d transition metal catalysts. Given the cost-effective and sustainable nature of earth-abundant first row transition metals, the development of less toxic, inexpensive 3d metal catalysts for C–H activation has gained considerable recent momentum as a significantly more environmentally-benign and economically-attractive alternative. Herein, we provide a comprehensive overview on first row transition metal catalysts for C–H activation until summer 2018.

3d Transition Metals for C-H Activation.

Free Radical Lipid Peroxidation: Mechanisms and Analysis

Catalytic activities of Schiff base transition metal complexes

Synthetic, Structural and Theoretical Studies on New Aromatic 1,2,4-Azadiphosphole Ring Systems: Crystal and Molecular Structure of P2C2tBu2NPh.

The effectiveness of several hydridoruthenium complexes as homogeneous hydrogenation catalysts for oct-1 -ene has been studied. The activity, which decreases in the order [RuCl(H)(PPh3)3]cis-[RuH2(PPh3)4] > cis-[ RuH2{PF2(NMe2)}(PPh3)3] > cis-[RuH2(PF3)(PPh3)3] > cis-[RuH2{PF2(NMe2)}2(PPh3)2] > cis-[RuH2(PF3)-{PF2)(NMe2)}(PPh3)2] > cis-[RuH2(PF3)2(PPh3)2] is related to the ease of PPh3 dissociation from these six-co-ordinate complexes. The monomeric complexes cis-[RuCl2(PF3)2(PPh3)2], cis-[RuCl2(PF2(NMe2)}2(PPh3)2], and cis-[RuCl2(CO)(PF,)(PPh3)2] do not act as catalysts for the hydrogenation of oct-1 -ene, either in the presence or absence of added triethylamine. The complexes [(Ph3P)2(F3P)RuCl3RuCl(PF3)(PPh3)] and [(Ph3P)2(F3P)-RuCl3 RuCl(PPh3)2] are not active catalysts, although the latter takes up H2 in the presence of NEt3. The hetero-bimetallic complex [(Ph3P)2ClRhCl3RuCl (PPh3)2] is slightly active as a hydrogenation catalyst.

Fluorophosphine complexes of ruthenium and osmium. part 5. alkene hydrogenation catalysed by ruthenium(ii) complexes

Use of Phospha-Alkynes RCP in Organometallic Chemistry

Sequential H-migration reactions in the formation of [Os3(μ2-H)(μ2-PHMe)(CO)10] and [Os3(μ2-H)2(μ3-PMe)(CO)9] during the reaction between the phosphinidene complex [W(PMe)(CO)5] and [Os3(μ2-H)2(CO)10]

John F. Nixon

Papers

Synthetic, Structural and Theoretical Studies on New Aromatic 1,2,4-Azadiphosphole Ring Systems: Crystal and Molecular Structure of P2C2tBu2NPh.

Fluorophosphine complexes of ruthenium and osmium. part 5. alkene hydrogenation catalysed by ruthenium(ii) complexes

Use of Phospha-Alkynes RCP in Organometallic Chemistry

Sequential H-migration reactions in the formation of [Os3(μ2-H)(μ2-PHMe)(CO)10] and [Os3(μ2-H)2(μ3-PMe)(CO)9] during the reaction between the phosphinidene complex [W(PMe)(CO)5] and [Os3(μ2-H)2(CO)10]

Novel Chemistry of the Aromatic 1,2,4‐Triphospholyl and 1,3‐Diphospholyl Anions, P3C2tBu2 and P2C3tBu3, and the 1,3,5‐Triphosphabenzene, P3C3tBu3