FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on info@ossila.com, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.


Product Code B831-500mg
Price £220 ex. VAT

Quality assured

Expert support

Volume discounts

Worldwide shipping

Fast and secure


Low price, high purity (>98%) ClIC

Synthesise highly efficient non-fullerene acceptors


ClIC, or 2-[5(6)-Chloro-3-oxo-2,3-dihydro-1H-inden-1-ylidene]malononitrile (CAS number 2364382-35-2 / 507484-48-2), is used in the synthesis of highly efficient non-fullerene acceptors such as eC9-2Cl. Chlorination usually decreases both the HOMO and LUMO energy levels simultaneously, and leads to a red-shifted spectrum in absorption for the resulting chlorinated non-fullerene acceptor materials.

Like all halogenated 3-(dicyanomethylidene)indan-1-one (2HIC) materials, ClIC, is a mixture of 2-(5-Chloro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (IC-Cl-δ) and 2-(6-Chloro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (IC-Cl-γ).

We sell a range of high purity non-fullerene acceptor monomers with priority dispatch available for most quantities (lead times may apply for large quantities). Qualifying orders ship free.

Red-shifted absorption spectrum

Red-shifted absorption

Chloride substituent lowers the HOMO/LUMO energy levels

High purity 2364382-35-2 / 507484-48-2

High purity

>98% ClIC Purity

Worldwide shipping for 2364382-35-2 / 507484-48-2

Worldwide shipping

Quick and reliable shipping

Electron deficient end group

Electron deficient end group

For the synthesis of highly efficient NFAs

General Information

CAS Number 2364382-35-2, 507484-48-2
Chemical Formula C12H5ClN2O
Molecular Weight 228.63 g/mol
Full Name 2-[5(6)-Chloro-3-oxo-2,3-dihydro-1H-inden-1-ylidene]malononitrile
Synonyms ICCl, 2-[5(6)-chloro-2,3-Dihydro-3-oxo-1H-inden-ylidene]-propanedinitrile
Classification / Family Malononitrile, Indanone, monomer and intermediates, non-fullerene acceptors (NFAs), NFA-OSCs, printing electronics

Chemical Structure

Chemical structure of ClIC
Chemical structure of ClIC, CAS 507484-48-2

Product Details

Purity >98% (by NMR)
Melting Point N/A
Appearance Off-white crystalline powder

MSDS Documentation

ClIC MSDSClIC MSDS Sheet

Literature and Reviews

  1. Single-Junction Organic Photovoltaic Cell with 19% Efficiency, Y Cui et al., Adv. Mater., 2102420 (2021); DOI: 10.1002/adma.202102420..
  2. Isomer-free: Precise Positioning of Chlorine-Induced Interpenetrating Charge Transfer for Elevated Solar Conversion, H. Lai et al., IScience, 17 (26), 302-314 (2019); DOI: 10.1016/j.isci.2019.06.033.
  3. Chlorination: An Effective Strategy for High-Performance. Organic Solar Cells, Q. Zhao et al., Adv. Sci., 7, 2000509 (2020); DOI: 10.1002/advs.202000509.
Return to the top