[ICl ₄ ] ⁻ : A Large Anisotropic Planar Anion Group Produces Giant Birefringence

Q: What does this research mean for the field?

The [ICl4]− anion group produces exceptional birefringence (Δn = 0.94 at 546 nm) and broad mid-infrared transparency (0.36 - 6 µm) in C5H7N2ICl4. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

Yi-Chen Liu; Ming-Zhi Zhang; Chun-Li Hu; J. G. Mao

doi:10.1039/d6cc00713a

January 1, 2026Chemical Communications

[ICl ₄ ] ⁻ : A Large Anisotropic Planar Anion Group Produces Giant Birefringence

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Key Points

The research aims to design and characterize the anisotropic planar [ICl4]- group for its optical properties.
Synthesis of C5H7N2ICl4 compound
Measurement of birefringence at 546 nm
Investigation of mid-infrared transparency across 0.36 - 6 µm
Achieved birefringence of Δn = 0.94 at 546 nm
Demonstrated broad mid-infrared transparency ranging from 0.36 to 6 µm

Implication

Demonstrates exceptional birefringence and transparency in a new compound, suggesting potential applications.

Abstract

This study designs the highly anisotropic planar [ICl 4 ] - group, which enables exceptional birefringence (Δn = 0.94 at 546 nm) and broad mid-infrared transparency (0.36 -6 µm) in C 5 H 7 N 2 ICl 4 , providing a...

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Cite This Study

Liu et al. (2026) studied this question.

synapsesocial.com/papers/69b4fc0eb39f7826a300ca71 https://doi.org/10.1039/d6cc00713a

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[ICl ₄ ] ⁻ : A Large Anisotropic Planar Anion Group Produces Giant Birefringence

Key Points

Implication

Abstract

Discussion

Cite This Study

[ICl ₄ ] ⁻ : A Large Anisotropic Planar Anion Group Produces Giant Birefringence

Key Points

Implication

Abstract

Discussion

Cite This Study

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