Assembly of a coordination polymer with sulphate-capped pentamolybdate units and copper: synthesis, structure, magnetic and catalytic studies

Gupta, Y and Zaidi, Z and Mehta, S and Chandewar, PR and Kumar, N and Paul, AK and Shee, D and Mondal, A and Sorokhaibam, LG and Banerjee, A (2022) Assembly of a coordination polymer with sulphate-capped pentamolybdate units and copper: synthesis, structure, magnetic and catalytic studies. In: Dalton Transactions, 51 . pp. 7255-7267.

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Abstract

A new coordination polymer based on the sulphate-capped pentamolybdate unit has been synthesized from the reaction of {Mo3S7Br6}2− with copper(ii) bromide and pyridine, in DMF. The as-synthesized compound, formulated as [CuII(C5H5N)4]3[{MoVI5O15(SO4)2}{CuII(C5H5N)3(DMF)(H2O)}][MoVI5O15(SO4)2]·2DMF (1), crystallizes in the monoclinic space group of P21/c. This compound has a one-dimensional double-chain coordination polymeric structure, composed of the pentameric {MoVI5O15(SO4)2} and the {CuII(C5H5N)4} units, and has been characterized in the solid-state with single-crystal and powder X-ray diffraction, infrared and optical spectroscopy, as well as thermal and magnetic studies. Due to its unique arrangement, the compound is observed to be nanoporous in nature, occupied by a co-crystallized DMF molecule. Surface area measurements confirm the presence of nano-sized pores within the compound. Variable temperature P-XRD studies show the framework to be stable up to a temperature of at least 100 °C. Due to its rigid framework and the presence of nano-sized pores, the compound was extensively studied as a catalyst for oxidative desulphurization of model oil and commercial diesel. The compound not only shows excellent performance for the removal of recalcitrant sulphur components, such as dibenzothiophene (DBT) in fuel oil (∼100% removal), but is also observed to show excellent turn-over-numbers, regeneration, and reproducibility during the catalytic process. © 2022 The Royal Society of Chemistry

Item Type:	Journal Article
Publication:	Dalton Transactions
Publisher:	Royal Society of Chemistry
Additional Information:	The copyright for this article belongs to the Royal Society of Chemistry
Keywords:	Coordination reactions; Copper compounds; Crystal structure; Single crystals; Synthesis (chemical), Coordination Polymers; Coordination-polymers; Double chain; Monoclinic space groups; Nano sized; One-dimensional; Polymer based; Polymeric structures; Single-crystal and powder; Synthesised, Sulfur compounds
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	29 May 2022 07:25
Last Modified:	29 May 2022 07:25
URI:	https://eprints.iisc.ac.in/id/eprint/72749

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