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Issue 21, 2015
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A facile strategy to adjust the density of planar triangle units in lead borate–nitrates

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Abstract

Three novel lead(II) borate–nitrates were obtained through a facile hydrothermal reaction by adjusting the concentrations of the starting materials, namely, [Pb64-O)4(BO3)](NO3) (1), H[Pb63-O)2(BO3)2](NO3)3 (2) and H[Pb84-O)33-O)(BO3)2](NO3)3 (3). All three compounds feature lead(II) oxo borate layers that are separated by nitrate anions. The 2D [Pb64-O)4(BO3)]+ layer parallel to the ab plane in 1 is built from 1D [Pb64-O)4]4+ chains along the a axis and bridging borate anions. The 2D H[Pb63-O)2(BO3)2]3+ layer in 2 which is perpendicular to the b axis is composed of “isolated” Pb2+ and tetranuclear [Pb43-O)2]4+ clusters interconnected by bridging BO3 groups. The [Pb84-O)33-O)(BO3)2]2+ (011) layer in 3 is composed of two types of lead(II) oxo chains, namely, 1D chains of [Pb44-O)2]4+ and 1D chains of [Pb44-O)(μ3-O)]4+, both elongated along the a axis, which are further interconnected by bridging borate anions. This study also demonstrates that a small change in the concentration of the starting materials could result in a product with a different density of the π-conjugated planar units.

Graphical abstract: A facile strategy to adjust the density of planar triangle units in lead borate–nitrates

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Supplementary files

Article information


Submitted
11 Mar 2015
Accepted
22 Apr 2015
First published
22 Apr 2015

CrystEngComm, 2015,17, 3953-3960
Article type
Paper
Author version available

A facile strategy to adjust the density of planar triangle units in lead borate–nitrates

J. Song, X. Xu, C. Hu, F. Kong and J. Mao, CrystEngComm, 2015, 17, 3953
DOI: 10.1039/C5CE00509D

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