STRUCTURE OF OXIDIZED FORMS OF NEODYMIUM AND PRASEODYMIUM (BIS)PHTHALOCYANINES

Citation
A. Darovsky et al., STRUCTURE OF OXIDIZED FORMS OF NEODYMIUM AND PRASEODYMIUM (BIS)PHTHALOCYANINES, Acta crystallographica. Section B, Structural science, 50, 1994, pp. 582-588
Citations number
19
Categorie Soggetti
Crystallography
ISSN journal
01087681
Volume
50
Year of publication
1994
Part
5
Pages
582 - 588
Database
ISI
SICI code
0108-7681(1994)50:<582:SOOFON>2.0.ZU;2-C
Abstract
The structure of the tetragonal alpha-phase of lanthanide derivatives of (bis)phthalocyanine PcL(III)Pc(ox) (Pc = [C32H16N8](2-), Pc(ox) = [ C32H16N8](-), L = lanthanide) crystals is reported. The crystals of Pc NdPc(ox) (I) and PcPrPc(ox) (II) crystallized on a platinum anode with (I) a = 19.544 (2), c = 6.514 (1) Angstrom, Z = 2, P4/nnc, (II) a = 2 0.066 (7), c = 6.463 (2) Angstrom, Z = 2, P4/nnc. The structure is bui lt up from columns of equi-distantly separated sandwich-like molecules . The molecular columns are arranged in a regular square lattice, allo wing the stacks to be shifted along the stack axis. The remarkable fea ture of this structure is the similar to 1:2.7 ratio of the metal-site occupancy coefficients, which is interpreted in terms of a disordered superstructure, the disorder being caused by the presence of a small amount of a triple-decker PcLPcLPc complex.