Light-induced dissolution and concomitant crystallization of a Keggin-type polyoxometalate mimicking a naturally occurring phenomenon

Kesar Tandekar; Marc Schmidtmann; Anjali Tripathi; Neeraj Kumar Mishra; Sabbani Supriya

doi:10.1039/d2cc03273b

Light-induced dissolution and concomitant crystallization of a Keggin-type polyoxometalate mimicking a naturally occurring phenomenon

Chem Commun (Camb). 2023 Mar 14;59(22):3241-3244. doi: 10.1039/d2cc03273b.

Authors

Kesar Tandekar¹, Marc Schmidtmann², Anjali Tripathi¹, Neeraj Kumar Mishra¹, Sabbani Supriya¹

Affiliations

¹ School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India. ssabbani@mail.jnu.ac.in.
² Institute of Chemistry, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany.

PMID: 36815372
DOI: 10.1039/d2cc03273b

Abstract

A suspension of a yellow polycrystalline compound [PPh₄]₃[PMo^VI₁₂O₄₀] in N-methylformanilide (NMF) (in which it is not soluble), on irradiation with sunlight, initiates dissolution via its reduction followed by its crystallization leading to the isolation of single crystals of compound [PPh₄]₄[PMo^VMo^VI₁₁O₄₀]·3CH₃(C₆H₅)NCHO (1). Compounds [PPh₄]₃[PMo^VI₁₂O₄₀]·1.75 CH₃(C₆H₅)NCHO (2) and [PPh₄]₃[PMo^VI₁₂O₄₀]·2CH₃(C₆H₅)NCHO (3), each containing an oxidized Keggin anion, are obtained at two different temperatures when the corresponding mother liquor is kept in the dark.