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.

What question did this study set out to answer?

The research aims to design and characterize the anisotropic planar [ICl4]- group for its optical properties.

March 14, 2026

ICl 4 - : A Large Anisotropic Planar Anion Group Produces Giant Birefringence

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

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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ICl 4 - : A Large Anisotropic Planar Anion Group Produces Giant Birefringence

Key Points

Abstract

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