Abstract
We report the synthesis of potassium phthalocyanine (KPc) and its structural characterization by synchrotron X-ray powder diffraction. We find that while KPc adopts the β-polymorphic structural type (monoclinic space group P21/a) common for many MPc solids, its structure is characterized by unique features. The K+ ions, which are statistically disordered over two symmetry-equivalent positions, reside in the intrastack spacing of the rodlike molecular assemblies and strongly bond equidistantly to selected N atoms of the two neighboring Pc rings along the chain direction with an unusual 5-fold coordination. The K+-stuffed slipped stacks of Pc units display much greater intrastack and slippage distances than those of other β-MPc polymorphs. They may be thought as comprising disordered dimeric (Pc)22- units; this leads to electron pairing and is consistent with the observed nonmagnetic response of the system.
Original language | English |
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Pages (from-to) | 10472-10478 |
Number of pages | 7 |
Journal | Inorganic chemistry |
Volume | 45 |
Issue number | 26 |
DOIs | |
Publication status | Published - 2006 Dec 25 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry