Assembling Polyiodides and Iodobismuthates Using a Template Effect of a Cyclic Diammonium Cation and Formation of a Low-Gap Hybrid Iodobismuthate with High Thermal Stability

Authors

Evgeny V. Dikarev, University at Albany, State University of New York
Zheng Wei, University at Albany, State University of New York
Tatiana A. Shestimerova, Moscow State Lomonosov University
Andrei V. Mironov, Moscow State Lomonosov University
Mikhail A. Bykov, Moscow State Lomonosov University
Anastasia V. Grigorieva, Moscow State Lomonosov University
Andrei V. Shevelkov, Moscow State Lomonosov University

Document Type

Article

Publication Date

6-15-2020

DOI

https://doi.org/10.3390/molecules25122765

Abstract

Exploiting a template effect of 1,4-diazacycloheptane (also known as homopiperazine, Hpipe), four new hybrid iodides, (HpipeH₂)₂Bi₂I₁₀·2H₂O, (HpipeH₂)I(I₃), (HpipeH₂)₃I₆·H₂O, and (HpipeH₂)₃(H₃O)I₇, were prepared and their crystal structures were solved using single crystal X-ray diffraction data. All four solid-state crystal structures feature the HpipeH₂²⁺ cation alternating with Bi₂I₁₀^4–, I₃^–, or I^– anions and solvent water or H₃O⁺ cation. HpipeH₂²⁺ assembles anionic and neutral building blocks into polymer structures by forming four strong (N)H···I and (N)H···O hydrogen bonds per cation, with the H···I distances ranging from 2.44 to 2.93 Å and H···O distances of 1.88–1.89 Å. These hydrogen bonds strongly affect the properties of compounds; in particular, in the case of (HpipeH₂)₂Bi₂I₁₀·2H₂O, they ensure narrowing of the band gap down to 1.8 eV and provide high thermal stability up to 240 °C, remarkable for a hydrated molecular solid

Comments

This is the Publisher’s PDF of the following article made available by Molecules: Shestimerova TA, Mironov AV, Bykov MA, Grigorieva AV, Wei Z, Dikarev EV, Shevelkov AV. Assembling Polyiodides and Iodobismuthates Using a Template Effect of a Cyclic Diammonium Cation and Formation of a Low-Gap Hybrid Iodobismuthate with High Thermal Stability. Molecules. 2020; 25(12):2765. https://doi.org/10.3390/molecules25122765

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Recommended Citation

Dikarev, Evgeny V.; Wei, Zheng; Shestimerova, Tatiana A.; Mironov, Andrei V.; Bykov, Mikhail A.; Grigorieva, Anastasia V.; and Shevelkov, Andrei V., "Assembling Polyiodides and Iodobismuthates Using a Template Effect of a Cyclic Diammonium Cation and Formation of a Low-Gap Hybrid Iodobismuthate with High Thermal Stability" (2020). Chemistry Department Faculty Scholarship. 3.
https://scholarsarchive.library.albany.edu/chemistry_fac_scholar/3