Issue 11, 2021

Structural insights into a new family of three-dimensional thiocyanate-bridged molecular double perovskites

Abstract

Extending new families of ABX3-type three-dimensional (3D) molecular perovskites based on diverse X-site molecular ligands is of interest in designing advanced hybrid materials for wide usage. Being a pseudo-halogen ligand, the thiocyanate anion is expected as an X-site bridge to construct 3D molecular perovskites, but has only yielded two pure inorganic instances so far. Herein, we report four new 3D SCN-bridged molecular double perovskites with a general formula of A2[CdM′(SCN)6] (A/M′ = K+/Ni2+, Me2NH2+/Ni2+, Me2NH2+/Mn2+, Me3S+/Cd2+), including three unprecedented hybrid instances incorporating organic cations. A detailed comparison between these SCN-bridged molecular perovskites and some azido-bridged analogues, on their host–guest interactions and structural distortions, revealed that the bent Cd–S–C angles in these SCN-bridged molecular perovskites vary in a narrow range, endowing their frameworks with a high structural distortion and a relatively strong structural rigidity. The present study not only extends SCN-bridged 3D molecular perovskites to enrich the perovskite family, but also paves a way for the rational design of new molecular perovskites.

Graphical abstract: Structural insights into a new family of three-dimensional thiocyanate-bridged molecular double perovskites

Supplementary files

Article information

Article type
Paper
Submitted
30 Jan 2021
Accepted
18 Feb 2021
First published
19 Feb 2021

CrystEngComm, 2021,23, 2208-2214

Structural insights into a new family of three-dimensional thiocyanate-bridged molecular double perovskites

D. Liu, K. Xie, W. Zhang, M. Zeng and X. Chen, CrystEngComm, 2021, 23, 2208 DOI: 10.1039/D1CE00147G

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