Breaking the tetrahedral constraint of tetracoordination: Square-planar [ICl

Zhiwei Sun, Qingran Ding, Weiqi Huang, Peixuan Zhu, Guimei Lai, Xue Mei, Sangen Zhao, Junhua Luo

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Article in Science advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

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8 authors.

Zhiwei SunCollege of Chemistry and Materials, Jiangxi Normal University, Nanchang, Jiangxi, 330022, P. R. China.ORCID 0009-0004-3282-6963

Qingran DingCollege of Chemistry and Materials, Jiangxi Normal University, Nanchang, Jiangxi, 330022, P. R. China.ORCID 0000-0003-0725-7688

Weiqi HuangState Key Laboratory of Functional Crystals and Devices, Chinese Academy of Sciences Fujian Institute of Research on the Structure of Matter, Fuzhou, Fujian, 350002, P. R. China.ORCID 0000-0002-7231-6632

Peixuan ZhuCollege of Chemistry and Materials, Jiangxi Normal University, Nanchang, Jiangxi, 330022, P. R. China.ORCID 0009-0007-7825-2143

Guimei LaiCollege of Chemistry and Materials, Jiangxi Normal University, Nanchang, Jiangxi, 330022, P. R. China.ORCID 0009-0009-5222-5010

Xue MeiCollege of Chemistry and Materials, Jiangxi Normal University, Nanchang, Jiangxi, 330022, P. R. China.

Sangen ZhaoQuantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area, Shenzhen, Guangdong, 518000, P. R. China.ORCID 0000-0002-1190-684X

Junhua LuoCollege of Chemistry and Materials, Jiangxi Normal University, Nanchang, Jiangxi, 330022, P. R. China.ORCID 0009-0002-0470-3902

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Birefringent crystals are indispensable for optoelectronic applications, yet commercially available crystals still suffer from the drawback of insufficient birefringence. Meanwhile, tetracoordination units-traditionally confined to a tetrahedral geometry-have long been sidelined from mainstream high-performance birefringent materials due to their intrinsic nearly negligible polarizability anisotropy. Herein, we break this tetrahedral constraint-demonstrating tetracoordinate square-planar [ICl

Identifiers

PMID42886794

DOI10.1126/sciadv.aef7948

PMCPMC13674490

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