Structure of a crystalline vapochromic platinum(II) salt

Levi J Grove; Allen G Oliver; Jeanette A Krause; William B Connick

doi:10.1021/ic701523e

Structure of a crystalline vapochromic platinum(II) salt

Inorg Chem. 2008 Mar 3;47(5):1408-10. doi: 10.1021/ic701523e. Epub 2008 Feb 5.

Authors

Levi J Grove¹, Allen G Oliver, Jeanette A Krause, William B Connick

Affiliation

¹ Department of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, USA.

PMID: 18247560
DOI: 10.1021/ic701523e

Abstract

Square-planar cations of the orange form of [Pt(Me2bzimpy)Cl](PF6) x DMF [Me2bzimpy = 2,6-bis(N-methylbenzimidazol-2-yl)pyridine] stack along the b axis in a head-to-tail arrangement with short interplanar spacings (3.35 and 3.39 A). Long intermolecular Pt...Pt contacts [4.336(2) and 4.565(2) A] and comparatively short Me2bzimpy...Me2bzimpy distances are consistent with spectroscopic measurements for orange salts of Pt(Me2bzimpy)Cl+. The DMF solvent molecules line channels parallel to c, which may provide a conduit for vapor absorption. The crystals are vapochromic, changing from orange to violet upon exposure to acetonitrile vapor. The changes in spectroscopic properties accompanying vapor absorption are consistent with changes in intermolecular interactions between complexes.

Publication types

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

MeSH terms

Crystallization
Models, Molecular
Molecular Structure
Platinum Compounds / chemistry*

Substances

Platinum Compounds