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Nonlinear organic–inorganic halide hybrids containing unprecedented linear [MIX2] coordination units and quasi-two-dimensional lone pairs

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Abstract

Organic–inorganic halide hybrids are rapidly gaining increased attention owing to their remarkable optoelectronic performance. Amongst these, divalent and trivalent metal cations (Pb2+, Sn2+, Bi3+, and Sb3+) usually link to six halogen X atoms and form an asymmetric [MX6] octahedron with weak optical anisotropy. Herein, we show a first family of monovalent-metal-based hybrid halides [N(CH3)4]MCl2 (M = Ga, In) with a zero-dimensional configuration containing unprecedented linear [MX2] units. Owing to the reduced coordination number, the lone pairs on Ga+ and In+ exhibit quasi-two-dimensional distribution, thereby leading to a narrowed bandgap, enhanced optical anisotropy and strong nonlinear second harmonic response of 1.4 and 1.3 times that of benchmark KH2PO4, respectively.

Graphical abstract: Nonlinear organic–inorganic halide hybrids containing unprecedented linear [MIX2]− coordination units and quasi-two-dimensional lone pairs

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Article information


Submitted
27 Feb 2020
Accepted
23 Mar 2020
First published
23 Mar 2020

Chem. Commun., 2020, Advance Article
Article type
Communication

Nonlinear organic–inorganic halide hybrids containing unprecedented linear [MIX2] coordination units and quasi-two-dimensional lone pairs

Q. Wu, X. Liu, Y. Du, C. Teng and F. Liang, Chem. Commun., 2020, Advance Article , DOI: 10.1039/D0CC01532F

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