.PI.-.PI. Interactions of Magnesiumphthalocyanine.

Accession number;01A0619407
Title;.PI.-.PI. Interactions of Magnesiumphthalocyanine.
Author; MISUGUCHI JIN (Yokohamakokudai Daigakuinkogakukenkyuin)
Journal Title;Japan Hardcopy
Journal Code:L0935A
ISSN:0916-8087
VOL.2001;NO.;PAGE.157-160(2001)
Figure&Table&Reference;FIG.2, TBL.1, REF.11
Pub. Country;Japan
Language;English
Abstract;Magnesiumphthalocyanine (MgPc) is a near-IR-active photoconductor used for laser printers. Our recent structure analysis revealed that the MgPc molecule is not flat in the solid state, but the central Mg atom is projected upward, forming a pyramidal structure. The present arrangement is quite indicative of an appreciable interaction along the stacking axis through formation of a five-coordinate Mg-complex. Therefore, the Mg-N interaction along the molecular stack has been investigated by energy partition analysis based on semi-empirical MO calculations. The Mg-N bond energy along the molecular stack is found to be roughly one-third of the Mg-N bond in the molecular plane and approximately one-half of the Mg-O bond of the MgPc six-coordinate complexes: MgPc/(H2O)2(NMP)2 and MgPc/(2-methoxyehtanol)2. These results indicate the chain formation of five-coordinate MgPc complexes along the stacking axis, showing considerable .PI.-.PI. interactions thorough the central Mg atom. (author abst.)