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- Title
Tetrachlorosubstituted Lead Phthalocyanines: Effect of the Positions of Substituents on the Structure of Single Crystals and thin Films.
- Authors
Klyamer, D. D.; Sukhikh, A. S.; Bonegardt, D. V.; Basova, T. V.
- Abstract
The comparative study of the crystal structure and structural features of thermally sublimed films with lead phthalocyanines with chlorine substituents at peripheral (PbPcCl4-p) and non-peripheral positions of the phthalocyanine ring (PbPcCl4-np) is reported. It is shown that as for non-substituted phthalocyanine lead, in PbPcCl4-p and PbPcCl4-np molecules, the lead cation is out of the plane of the macrocycle. PbPcCl4-p crystallizes in the tetragonal crystal system (space group I4/m), and the PbPcCl4-p molecules are packed into vertical stacks along axis 4. The introduction of chlorine substituents into non-peripheral positions of the phthalocyanine ring causes a change in the crystal structure. PbPcCl4-np crystallizes in the space group P21/n, with PbPcCl4-np molecules being packed in layers along the b axis; inside one layer - in chains with alternating up and down orientations of lead atoms. The effect of the position of chlorine substituents on the microstructural features of PbPcСl4-p and PbPcCl4-np films is studied by powder X-ray diffraction and electronic absorption spectroscopy.
- Subjects
TETRAGONAL crystal system; SINGLE crystals; CRYSTAL structure; X-ray powder diffraction; PHTHALOCYANINES; SPACE groups
- Publication
Journal of Structural Chemistry, 2023, Vol 64, Issue 4, p650
- ISSN
0022-4766
- Publication type
Article
- DOI
10.1134/S0022476623040121