Accessibility navigation


Synthesis and characterisation of iodobismuthates containing N- substituted 1,4-diazabicyclo[2.2.2]octane

Cai, Y., Chippindale, A. and Vaqueiro, P. ORCID: https://orcid.org/0000-0001-7545-6262 (2022) Synthesis and characterisation of iodobismuthates containing N- substituted 1,4-diazabicyclo[2.2.2]octane. Journal of Chemical Crystallography. ISSN 1572-8854 (In Press)

[img] Text - Accepted Version
· Restricted to Repository staff only
· The Copyright of this document has not been checked yet. This may affect its availability.

1MB

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

Abstract/Summary

Two new hybrid iodobismuthates, [C8H17N2][C10H22N2][BiI6] (1) and [C6H12N2]0.5[C10H22N2]3.5[Bi2I10][Bi2I9] (2), have been prepared by solvothermal synthesis in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO) and ethanol. Both compounds have been characterized by single-crystal and powder X-ray diffraction, infrared and UV-vis spectroscopies and thermogravimetric analysis. Structure determination reveals that the crystal structure of 1 contains mononuclear [BiI6]3- anions, whilst 2 contains an unusual combination of dinuclear anions, [Bi2I9]3- and [Bi2I10]4-, consisting of two edge- and two face-sharing [BiI6]3- octahedra, respectively. Mono- and diethylated derivatives of DABCO, which are formed in situ under solvothermal conditions, act as countercations and are located between the discrete anions. The optical band gaps of 1 and 2, which are 2.29(1) and 2.03(2) eV respectively, are consistent with the red color of these compounds, and are comparable to the band gaps measured for other iodobismuthates containing discrete anions.

Item Type:Article
Refereed:Yes
Divisions:Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
Interdisciplinary centres and themes > Chemical Analysis Facility (CAF) > Spectrometry (CAF)
Interdisciplinary centres and themes > Chemical Analysis Facility (CAF) > Thermal (CAF)
Interdisciplinary centres and themes > Chemical Analysis Facility (CAF) > Xray (CAF)
ID Code:106128
Uncontrolled Keywords:iodobismuthate, DABCO, crystal structure, semiconductor
Publisher:Springer

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation