Redox flow batteries are an emergent technology in the field of energy storage for power grids with high renewable generator penetration. The copper redox battery (CuRFB) could play a significant role future electrochemical systems due to numerous advantages its all-copper chemistry. Furthermore, like more mature vanadium RFB technology, CuRFBs have ability independently scale and capacity whil...

The new complexes [1,3-{Cp*(dppe)Fe−C≡C-}2-5-(X)-(C6H3)] (X=CH3, [m-1 b]; X=C(O)OCH3, c]; X=C≡C−4−C6H4−C(O)OCH3, d]; X=C≡C−4−C6H4-NO2, e]) were prepared by reaction of the iron chloride Cp*(dppe)FeCl (4) and proligands 3 b–e obtained a cross coupling between suitable aryl dibromides trimethylsylilacethylene. After purification b–e] isolated in yields ranging from 14 to 37 % characterized elemen...

Density Functional Theory (DFT) calculations indicate that AuF might be synthesized at 22.6 GPa from AuF3 and Au (1 : 2), and subsequently quenched down to at least 5 GPa in the Cmcm (bent chain) structure.

Two subvalent, redox-active diborane(4) anions, [3]4? and [3]2?, carrying exceptionally high negative charge densities are reported: Reduction of 9-methoxy-9-borafluorene with Li granules without stirring leads to the crystallization B(sp3)?B(sp2) diborane(5) anion salt Li[5]. [5]? contains a 2,2?-biphenyldiyl-bridged B?B core, chelating 2,2?-biphenyldiyl moiety, MeO substituent. Li[5] Na metal...

Polychlorinated biphenyls (PCBs) comprise a group of persistent organic pollutants that differ significantly in their physicochemical properties, their persistence, and their biological activities. They can be metabolized via hydroxylated and dihydroxylated metabolites to PCB quinone intermediates. We have recently demonstrated that both dihydroxy PCBs and PCB quinones can form semiquinone radi...

A chelating diphosphine ligand with a central N-heterocyclic phosphenium cation (NHP(+)) has been used to explore the coordination chemistry of NHPs with nickel. Treatment of the chlorophosphine precursor [PPP]Cl (1) with stoichiometric Ni(COD)2 affords (PPP)NiCl (8), which is best described as a Ni(II)/NHP(-) phosphido complex formed via oxidative addition of the P-Cl bond. In contrast, treati...

1 The reactions of the oxidised and semiquinone forms of Peptostreptococcus elsdenii flavodoxin with sodium dithionite have been studied by stopped flow spectrophotometry. At low ionic strength where comproportionation of flavodoxin is slow compared with the overall rate of reduction, the reactions with an excess of dithionite follow first-order kinetics. Semiquinone is not detected during the ...

The measurement of the dimerization constants of hydrogen-bonded ruthenium complexes (12, 22, 32) linked by a self-complementary pair of 4-pyridylcarboxylic acid ligands in different redox states is reported. Using a combination of FTIR and UV/vis/NIR spectroscopies, the dimerization constants (KD) of the isovalent, neutral states, 12, 22, 32, were found to range from 75 to 130 M-1 (ΔG0 = -2.56...

This study has examined the pulse electrodeposition of copper from a deep eutectic solvent. Pulse plating parameters were selected using methodologies originally developed for aqueous solutions, including constraints arising double layer charging and mass transport effects. Although could be deposited under nearly all conditions, in many instances only partial was observed current efficiencies ...

The ability of the terpyridine ligand to stabilize alkyl complexes of nickel has been central in obtaining a fundamental understanding of the key processes involved in alkyl-alkyl cross-coupling reactions. Here, mechanistic studies using isotopically labeled (TMEDA)NiMe(2) (TMEDA = N,N,N',N'-tetramethylethylenediamine) have shown that an important catalyst in alkyl-alkyl cross-coupling reaction...