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Title: Orientational order of [VOF{sub 5}]{sup 2-} and [NbOF{sub 5}]{sup 2-} polar units in chains

Abstract

The generation of polarity in the solid state necessitates ordered, polar basic-building units (BBUs). This paper examines the evolution of ordered BBUs of 1D chains constructed of early transition metals (ETMs) and late transition metals. The cause of polar distortion orientation is illustrated with subtle alterations in the heterotypic structures of one previously reported compound (CuNbOF{sub 5}(H{sub 2}O){sub 2}(pyz){sub 3}) and three new hybrid materials, presented here: CuNbOF{sub 5}(H{sub 2}O){sub 4}(pyz){sub 2} (1), CuVOF{sub 5}(H{sub 2}O){sub 4}(pyz){sub 2} (2) and CuVOF{sub 5}(H{sub 2}O){sub 2}(pyz){sub 3} (3) (pyz=pyrazine). In contrast to the [NbOF{sub 5}]{sup 2-} octahedra of CuNbOF{sub 5}(H{sub 2}O){sub 2}(pyz){sub 3} and compound (1) that have oxide ligands within the 1D BBUs, the [VOF{sub 5}]{sup 2-} octahedra of compounds (2) and (3) contain disordered oxide ligands perpendicular to the chains. To create polar 1D BBUs in the solid state, one must have an understanding of how to direct distortions. We demonstrate that the choice of specific polar BBUs within a distinct environment is necessary for orientational order of the ETM anions. - Graphical abstract: The orientational order of [VOF{sub 5}]{sup 2-} and [NbOF{sub 5}]{sup 2-} polar anions in chains and its influence on noncentrosymmetry are discussed on the basis ofmore » the three new hybrid compounds composed of linear chains: (CuVOF{sub 5}(H{sub 2}O){sub 4}(pyz){sub 2}, CuNbOF{sub 5}(H{sub 2}O){sub 4}(pyz){sub 2} and CuVOF{sub 5}(H{sub 2}O){sub 2}(pyz){sub 3}). Orientational order of the distortion of the early transition metal can be achieved by subtle modifications of the anisotropy in the anionic environment and a proper choice of the polar anion. Highlights: Black-Right-Pointing-Pointer Three new hybrid compounds were characterized by single-crystal XRD. Black-Right-Pointing-Pointer [VOF{sub 5}]{sup 2-} and [NbOF{sub 5}]{sup 2-} anions differ in the nucleophilicities of the ligands. Black-Right-Pointing-Pointer The order of the anion is controlled by increasing the anisotropy of its environment.« less

Authors:
; ;
Publication Date:
OSTI Identifier:
22149896
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 195; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ANIONS; ANISOTROPY; LIGANDS; MONOCRYSTALS; OXIDES; OXYFLUORIDES; SOLIDS; TRANSITION ELEMENTS; WATER; X-RAY DIFFRACTION

Citation Formats

Gautier, Romain, E-mail: r-gautier@northwestern.edu, Donakowski, Martin D., E-mail: marty@u.northwestern.edu, and Poeppelmeier, Kenneth R., E-mail: krp@northwestern.edu. Orientational order of [VOF{sub 5}]{sup 2-} and [NbOF{sub 5}]{sup 2-} polar units in chains. United States: N. p., 2012. Web. doi:10.1016/J.JSSC.2012.01.033.
Gautier, Romain, E-mail: r-gautier@northwestern.edu, Donakowski, Martin D., E-mail: marty@u.northwestern.edu, & Poeppelmeier, Kenneth R., E-mail: krp@northwestern.edu. Orientational order of [VOF{sub 5}]{sup 2-} and [NbOF{sub 5}]{sup 2-} polar units in chains. United States. doi:10.1016/J.JSSC.2012.01.033.
Gautier, Romain, E-mail: r-gautier@northwestern.edu, Donakowski, Martin D., E-mail: marty@u.northwestern.edu, and Poeppelmeier, Kenneth R., E-mail: krp@northwestern.edu. Thu . "Orientational order of [VOF{sub 5}]{sup 2-} and [NbOF{sub 5}]{sup 2-} polar units in chains". United States. doi:10.1016/J.JSSC.2012.01.033.
@article{osti_22149896,
title = {Orientational order of [VOF{sub 5}]{sup 2-} and [NbOF{sub 5}]{sup 2-} polar units in chains},
author = {Gautier, Romain, E-mail: r-gautier@northwestern.edu and Donakowski, Martin D., E-mail: marty@u.northwestern.edu and Poeppelmeier, Kenneth R., E-mail: krp@northwestern.edu},
abstractNote = {The generation of polarity in the solid state necessitates ordered, polar basic-building units (BBUs). This paper examines the evolution of ordered BBUs of 1D chains constructed of early transition metals (ETMs) and late transition metals. The cause of polar distortion orientation is illustrated with subtle alterations in the heterotypic structures of one previously reported compound (CuNbOF{sub 5}(H{sub 2}O){sub 2}(pyz){sub 3}) and three new hybrid materials, presented here: CuNbOF{sub 5}(H{sub 2}O){sub 4}(pyz){sub 2} (1), CuVOF{sub 5}(H{sub 2}O){sub 4}(pyz){sub 2} (2) and CuVOF{sub 5}(H{sub 2}O){sub 2}(pyz){sub 3} (3) (pyz=pyrazine). In contrast to the [NbOF{sub 5}]{sup 2-} octahedra of CuNbOF{sub 5}(H{sub 2}O){sub 2}(pyz){sub 3} and compound (1) that have oxide ligands within the 1D BBUs, the [VOF{sub 5}]{sup 2-} octahedra of compounds (2) and (3) contain disordered oxide ligands perpendicular to the chains. To create polar 1D BBUs in the solid state, one must have an understanding of how to direct distortions. We demonstrate that the choice of specific polar BBUs within a distinct environment is necessary for orientational order of the ETM anions. - Graphical abstract: The orientational order of [VOF{sub 5}]{sup 2-} and [NbOF{sub 5}]{sup 2-} polar anions in chains and its influence on noncentrosymmetry are discussed on the basis of the three new hybrid compounds composed of linear chains: (CuVOF{sub 5}(H{sub 2}O){sub 4}(pyz){sub 2}, CuNbOF{sub 5}(H{sub 2}O){sub 4}(pyz){sub 2} and CuVOF{sub 5}(H{sub 2}O){sub 2}(pyz){sub 3}). Orientational order of the distortion of the early transition metal can be achieved by subtle modifications of the anisotropy in the anionic environment and a proper choice of the polar anion. Highlights: Black-Right-Pointing-Pointer Three new hybrid compounds were characterized by single-crystal XRD. Black-Right-Pointing-Pointer [VOF{sub 5}]{sup 2-} and [NbOF{sub 5}]{sup 2-} anions differ in the nucleophilicities of the ligands. Black-Right-Pointing-Pointer The order of the anion is controlled by increasing the anisotropy of its environment.},
doi = {10.1016/J.JSSC.2012.01.033},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 195,
place = {United States},
year = {2012},
month = {11}
}