Issue 48, 2021

Solvatomorphs of (Bu4N)2[{Ag(N2-py)}2Mo8O26]: structure, colouration and phase transition

Abstract

Self-assembly of (Bu4N)4[β-Mo8O26], AgNO3 and N2-py (N2-py = 2,6-diaminopyridine) in DMF solution results in a (Bu4N)2[β-{Ag(N2-py)}2Mo8O26] complex which crystallises as two phases: one (OP) is orange in colour and consists of [β-{Ag(N2-py)}2Mo8O26]2− monomers and [β-{Ag(N2-py)}2Mo8O26]n2n polymeric chains in the crystal structure; the other (YP) is yellow in colour and built only with [β-{Ag(N2-py)}2Mo8O26]2− monomers. Both complexes were characterised by single crystal X-ray diffraction (SCXRD), X-ray powder diffraction (XRPD), diffuse reflectance (DR), infrared spectroscopy (IR), elemental analysis, and quantum chemical calculations. According to differential scanning calorimetry (DSC) and DR, OP demonstrates a complicated phase transition at 130 K. Comprehensive SCXRD studies of the crystal structure change show rearrangement of the Ag+ coordination sphere related with the dominant Ag–N bond distance change. TGA of both complexes confirms formation of silver nanoparticles (Ag-NPs), MoO3 and Ag2Mo4O13 upon thermal decomposition. The Ag-NPs were studied by SEM. Exfoliation of the resulting mixture in water gives a Ag-NP and MoO3 mixed colloid system studied by TEM.

Graphical abstract: Solvatomorphs of (Bu4N)2[{Ag(N2-py)}2Mo8O26]: structure, colouration and phase transition

Supplementary files

Article information

Article type
Paper
Submitted
26 8 2021
Accepted
02 11 2021
First published
09 11 2021

CrystEngComm, 2021,23, 8527-8537

Solvatomorphs of (Bu4N)2[{Ag(N2-py)}2Mo8O26]: structure, colouration and phase transition

P. A. Abramov, V. Yu. Komarov, D. A. Pischur, V. S. Sulyaeva, E. Benassi and M. N. Sokolov, CrystEngComm, 2021, 23, 8527 DOI: 10.1039/D1CE01152A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements