New heteroleptic 1,2-bis(diphenylphosphino)ethane appended cobalt(iii) ferrocene dithiocarbamates as sensitizers in dye-sensitized solar cells (DSSCs)

Abstract

Three new heteroleptic 1,2-bis(diphenylphosphino)ethane (dppe) appended Co(III) ferrocene dithiocarbamate complexes with formula [Co(dppe)(Fcdtc)]PF6 ((Fcdtc = N-benzyl-N-methylferrocene dithiocarbamate (Co-FcBz), N-2-methylpyridyl-N-methylferrocene dithiocarbamate (Co-FcPy) and N-ethanol-N-methylferrocene dithiocarbamate (Co-FcEtOH); dppe = 1,2-Bis(diphenylphosphino)ethane) have been...

The supramolecular frameworks and electrocatalytic properties of two new structurally diverse tertiary phosphane-appended nickel(ii) and copper(i) thiosquarates

“…For both complexes, the deep red circular depressions on the d norm surfaces are indicative of the strong interactions, while the existence of weak interactions can be seen as lightly coloured depressions over the d norm surface. 24,25…”

Insights into the supramolecular and molecular electrocatalytic properties of 1,2-bis(diphenylphosphine)ethane appended nickel(ii) 1,2-dithiosquarate for oxygen and hydrogen evolution reactions

“…This technique determines those regions where the electron densities of two interacting molecules overlap and the two interacting molecules can ''recognize'' one another through non-covalent interactions (NCIs) that control their way of approaching each other and affecting the packing in the solid state. 17 The NCI analysis revealed the existence of intermolecular C-HÁ Á ÁO, CÁ Á ÁO interactions and pÁ Á Áp interaction as green blobs between the adjacent molecules in the corresponding NCI plots (Fig. 6(a) and (b)).…”

“…7(a)), indicates an onset potential at 1.50 V, which is relatively better than the analogous Ni-mtsq complex reported in our previous report. 17 Additionally, a significant change in maximum current densities for both complexes was observed wherein Nidtsq exhibited 21.61 mA cm À2 while Ni-mtsq displayed a maximum current density of 8.31 mA cm À2 . Apart from this, no redox peak for Nidtsq was observed between 1.43-1.55 V, while Ni-mtsq exhibited an intense redox peak in this region along with water oxidation.…”

“…14 The unusual redox properties in this class of compounds are due to the non-innocent character originating from their quasiaromaticity and strong p-electron donor ability due to the involvement of sulfur atoms. [14][15][16][17][18] The avid interest in such molecule based metal complexes stems from the following reasons: (a) they have tuneable steric and electronic structures, (b) adaptable intrinsic activity, (c) clearly defined catalytic mechanisms, (d) high product selectivity and (e) excellent atomic economy. 15 Inspired by these aspects associated with metal dithiolenes/dithiolates, we recently have explored their utility as molecular electrocatalysts for the oxygen evolution reaction (OER).…”

“…16 In view of the attractive electrocatalytic applications of metal complexes, we recently have explored the supramolecular frameworks and electrocatalytic properties of two new structurally diverse tertiary phosphane-appended nickel(II) and copper(I) ethoxycyclobutenedione-4-thiolates. 17 Working in the same vein and in the quest for new supramolecular frameworks as well as apt electrocatalysts for the OER and HER, we herein present a newly synthesized and characterized heteroleptic 1,2-bis-(diphenylphosphino)ethane nickel(II) 3,4-dioxocyclobut-1-ene-1,2-dithiolate (Nidtsq). The supramolecular architectures of this new complex have been explored and the nature of the weak non-covalent interactions has been addressed with the aid of computational analysis.…”