The chemistry of Group 8 metal complexes with phosphinous acids and related P OH ligands

Abstract

1. Introduction 2. Electronic and steric aspects of phosphinous acids 3. Procedures for the preparation of metal complexes with P-OH ligands 4. Synthesis and reactivity of iron complexes 5. Synthesis and reactivity of ruthenium complexes 6. Synthesis and reactivity of osmium complexes 7. Applications and involvement in catalysis 7.1. Nitrile hydration reactions 7.2. C-H bond arylation processes 7.3. Hydrogenation reactions 7.4. Other catalytic transformations 8. Conclusions and outlook

Core and double bond functionalisation of cyclopentadithiophene-phosphaalkenes

“…The gold coordination is barely The hydrogen bond donor⋯acceptor distance is 2.550(4) Å and the O-H⋯O angle 164°indicating strong hydrogen bonding. 31,32 These findings are in line with previous observations of changing the tautomeric forms upon coordination [33][34][35][36] or shifting the equilibrium towards the hydroxyphosphine tautomer using electron deficient P-substituents. 37,38 Complex [AuCl•A] can also be converted into a cationic gold (I) species 9 upon reaction with AgPF 6 characterised by a broad shielded 31 P-NMR resonance at ca.…”

Secondary Phosphine Oxides: Bifunctional Ligands in Catalysis

“…[5,10] Coordination chemistry and catalysis of Fe, Ru, Os (group 8) metals has been reviewed more recently. [11] Several reviews on catalysis have appeared [12,13,14,15] and also with focus on enantioselective catalysis. [16,17] In the present review we will focus on metal-ligand cooperation of SPOs, [18,19] in which both O and P donor atoms play a critical role; the phosphorus atom anchors the ligand to the metal and the oxygen atom is available for an active role in the catalytic process, usually as a nucleophile.…”

Selective Hydration of Nitriles to Corresponding Amides in Air with Rh(I)-N-Heterocyclic Complex Catalysts

“…To avoid this problem, in the last decades several remarkable catalytic systems have been developed to stop hydration at the amide stage, e.g., using enzymes as biocatalysts (nitrile hydratase, NHase) [3], nanocatalysts such as a Fe 3 O 4 magnetic nanoparticles-supported Cu-NHC complex [4], or ruthenium hydroxide nanoparticles on magnetic silica [5], silver nanoparticles [6], and other heterogeneous [7][8][9][10] or homogenous catalysts. A broad spectrum of transition metal complexes based on rhodium [11,12], ruthenium [12][13][14][15], nickel [16], osmium [17], and gold [18] were employed as catalysts, and the field has been reviewed from various aspects [19][20][21][22][23][24][25][26][27][28][29].…”