Stephen M Mansell

A switchable, solvent-free catalytic system was developed in which Al methyl aminebis(phenolate) catalysts selectively initiate the formation of a polyether from cyclohexene oxide under CO atmosphere or the ring opening...

Two Mn-phosphinophosphinine complexes were synthesised from reaction of the proligand with [MnBr(CO)] at 80 °C for 2 h; 2-diphenylphosphino-3-methyl-6-trimethylsilylphosphinine manganese tricarbonyl bromide (2TMS) and 2-diphenylphosphino-3-methyl-phosphinine manganese tricarbonyl bromide (2H). P{H}...

In order to establish design criteria for Rh C-H borylation catalysts, analogues of the successful catalyst [Rh(Ind)(SIDipp)(COE)] (Ind = η-indenyl, SIDipp = 1,3-bis(2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene, and COE = -cyclooctene) were synthesized by...

Indenyl (Ind) rhodium N-heterocyclic carbene (NHC) complexes [Rh(η -Ind)(NHC)(L)] were synthesised for 1,3-bis(2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene (SIPr) with L=C H (1), CO (2 a) and cyclooctene (COE; 3), for 1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene (SIMes) with L=CO...

The first ruthenium dihydride complex featuring a phosphinine ligand -[Ru(H)(2-PPh-3-Me-6-SiMe-PCH)] was synthesised exclusively as the -isomer. When formed from the reaction of -[Ru(Cl)(2-PPh-3-Me-6-SiMe-PCH)] with two equivalents of Na[BHEt], as demonstrated...

The structure of (μ-1κ:2(η),κ ,'-(2-{[2,6-bis(propan-2-yl)phen-yl]aza-nid-yl}eth-yl)[2-(1-inden-1-yl)eth-yl]aza-nido)(1,4,7,10,13,16-hexa-oxa-cyclo-octa-dec-ane-1κ )lithiumtin, [LiSn(CHO)(CHN)], at 100 K has monoclinic (2/) symmetry. Analysis of the coordination of the Sn to the indenyl ring shows that the Sn inter-acts...

N-Heterocyclic carbenes (NHCs) have become immensely successful ligands in coordination chemistry and homogeneous catalysis due to their strong terminal σ-donor properties. However, by targeting NHC ligands with additional functionalisation, a...

Three new carboranylphosphines, [1-(1'--1',7'-CBH)-7-PPh--1,7-CBH], [1-(1'-7'-PPh--1',7'-CBH)-7-PPh--1,7-CBH], and [1-{PPh-(1'--1',2'-CBH)}--1,2-CBH], have been prepared, and from a combination of these and literature compounds, eight new carboranylphosphine selenides were subsequently synthesized. The relative basicities of...

Synergic combinations of alkali-metal hydrocarbyl/amide reagents were used to synthesise saturated N-heterocyclic carbene (NHC) ligands tethered to a fluorenide anion through deprotonation of a spirocyclic precursor, whereas conventional bases were...

The first example of a carborane with a catecholborolyl substituent, [1-Bcat-2-Ph--1,2-C₂BH] (), has been prepared and characterized and shown to act as the Lewis acid component of an intermolecular frustrated...