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

Gupta, Yesleen and Zaidi, Zakiullah and Mehta, Sakshi and Chandewar, Pranay R. and Kumar, Nikhil and Paul, Avijit K. and Shee, Debaprasad and et al, . (2022) Assembly of a coordination polymer with sulphate-capped pentamolybdate units and copper: synthesis, structure, magnetic and catalytic studies. Dalton Transactions. pp. 1-13. ISSN 1477-9226

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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

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IITH Creators:

IITH Creators	ORCiD
Shee, Debaprasad	https://orcid.org/0000-0002-3503-8098

Item Type:

Article

Additional Information:

YG thanks the SERB (Grant No. ECR/2017/000932) and VNIT, Nagpur for providing a research fellowship. AB thanks the SERB (Grant No. ECR/2017/000932) for financial assistance. The authors acknowledge Prof. Dieter Fenske and Karlsruhe Nano Micro Facility (KNMF), a Helmholtz research infrastructure at the Karlsruhe Institute of Technology (KIT), for performing the single crystal X-ray diffraction measurement. The authors thank Dr. S. K. Nayak, VNIT, Nagpur, for assistance in XRD data analysis. The authors are grateful to the DST-FIST (SR/FIST/CSI-279/2016(C)) for providing P-XRD characterization facility.

Uncontrolled Keywords:

Coordination Polymers; Coordination-polymers; Double chain; Monoclinic space groups; Nano sized; One-dimensional; Polymer based; Polymeric structures; Single-crystal and powder; Synthesised

Subjects:

Chemistry
Chemical Engineering

Divisions:

Department of Chemical Engineering
Department of Chemistry

Depositing User:

. LibTrainee 2021

Date Deposited:

19 Jul 2022 10:03

Last Modified:

19 Jul 2022 10:03

URI:

http://raiithold.iith.ac.in/id/eprint/9790