Infinite Polyiodide Chains in the Pyrroloperylene-Iodine Complex: Insights into the Starch-Iodine and Perylene-Iodine Complexes

Sheri Madhu; Hayden A Evans; Vicky V T Doan-Nguyen; John G Labram; Guang Wu; Michael L Chabinyc; Ram Seshadri; Fred Wudl

doi:10.1002/anie.201601585

Infinite Polyiodide Chains in the Pyrroloperylene-Iodine Complex: Insights into the Starch-Iodine and Perylene-Iodine Complexes

Angew Chem Int Ed Engl. 2016 Jul 4;55(28):8032-5. doi: 10.1002/anie.201601585. Epub 2016 May 30.

Authors

Sheri Madhu¹, Hayden A Evans^{1

2}, Vicky V T Doan-Nguyen^{1

3}, John G Labram³, Guang Wu², Michael L Chabinyc⁴, Ram Seshadri^{5

6}, Fred Wudl^{7

8}

Affiliations

¹ Materials Research Laboratory, University of California, Santa Barbara, CA, 93106, USA.
² Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA.
³ California NanoSystems Institute, University of California, Santa Barbara, CA, 93106, USA.
⁴ Materials Department, University of California, Santa Barbara, CA, 93106, USA.
⁵ Materials Research Laboratory, University of California, Santa Barbara, CA, 93106, USA. seshadri@mrl.ucsb.edu.
⁶ Materials Department, University of California, Santa Barbara, CA, 93106, USA. seshadri@mrl.ucsb.edu.
⁷ Materials Research Laboratory, University of California, Santa Barbara, CA, 93106, USA. wudl@chem.ucsb.edu.
⁸ Materials Department, University of California, Santa Barbara, CA, 93106, USA. wudl@chem.ucsb.edu.

PMID: 27239781
DOI: 10.1002/anie.201601585

Abstract

We report the preparation and X-ray crystallographic characterization of the first crystalline homoatomic polymer chain, which is part of a semiconducting pyrroloperylene-iodine complex. The crystal structure contains infinite polyiodide I∞ (δ-) . Interestingly, the structure of iodine within the insoluble, blue starch-iodine complex has long remained elusive, but has been speculated as having infinite chains of iodine. Close similarities in the low-wavenumber Raman spectra of the title compound and starch-iodine point to such infinite polyiodide chains in the latter as well.

Keywords: X-ray diffraction; conducting materials; perylenes; polyhalides; solid-state structures.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't