148639-29-6Relevant articles and documents
Oligomeric cadmium-phthalocyanine complexes: Novel supramolecular free radical structures
Chambrier, Isabelle,White, Gaye F.,Cook, Michael J.
, p. 7608 - 7618 (2007)
Certain cadmium-metallated phthalocyanines give rise to EPR active triple-decker sandwich complexes containing two Cd ions and three phthalocyanine (Pc) ligands. These have been shown to form when the ligands bear either eight nonperipheral alkyl or alken
X-ray crystallographic analysis of a tailor-made bis(phthalocyaninato)- TbIII single-molecule magnet as a fundamental unit for supramolecular spintronic devices
Klyatskaya, Svetlana,Eichhoefer, Andreas,Wernsdorfer, Wolfgang
supporting information, p. 4179 - 4185,7 (2014/12/09)
The single-crystal X-ray diffraction analysis of the title compound, the pyrene-substituted unsymmetrical bis(phthalocyaninato)terbium(III) Single-Molecule Magnet (SMM) [Pc-Tb-Pc]0 (1) (Pc = dianion of phthalocyanine, P* = dianion of phthalocyanine decorated with six flexible hexyl chains and one 4-pyren-1yl-butoxy group), was carried out. Both phthalocyaninato ligands in 1 are distorted from planarity and, therefore, adopt a biconcave shape. Effective π-π interactions between the molecules lead to the formation of head-to-tail π dimers. These dimers are stacked in the crystal, forming adjacent, parallel columns, the axes of which are tilted by 30° with respect to the C4 axes of the macrocycles. Herein, we also report the synthesis and characterization of the new isostructural Dy (compound 2) and Ho (compound 3) analogues of 1. The structure of a [Pc-Tb-Pc] SMM was determined. A single-crystal X-ray diffraction analysis revealed an effective intermolecular π-π interaction leading to the formation of π dimers, which are stacked with neighboring dimers in parallel columns with an axis tilted by 30° with respect to the C4 axis of individual molecules. Isostructural Dy and Ho analogues were synthesized and characterized.
Synthesis and characterization of some octaalkyl substituted lead phthalocyanines and unexpected variations in lead lability arising from the position of substituents and their chain length
Sosa-Vargas, Lydia X.,Chambrier, Isabelle,Macdonald, Colin J.,Coles, Simon J.,Tizzard, Graham J.,Cammidge, Andrew N.,Cook, Michael J.
, p. 511 - 521 (2013/09/02)
The preparation of some peripherally substituted (2,3,9,10,16,17,23,24) and non-peripherally substituted (1,4,8,11,15,18,22,25) octaalkyl lead(II) phthalocyanines with different alkyl chain lengths (6, 7, 8 or 9 carbons) is described and a comparison of some of their properties reported. X-ray structure analyses of the isomeric peripheral and non-peripheral octakis(octyl) phthalocyaninato lead(II) compounds reveal a greater degree of distortion of the ligand ring system from planarity in the former derivative. The series of peripherally substituted octaalkyl lead(II) phthalocyanines exhibit columnar liquid crystal behavior whereas the non-peripherally substituted isomers do not. The lability of the lead ion was investigated using 1H NMR spectrometry under a specific set of conditions (8.8 × 10-4 M solutions of the phthalocyanine in d8-toluene containing d 4-acetic acid 2.06 × 10-5 M). All the compounds underwent acid catalyzed demetalation at rates dependent upon the location of the substituents and, more surprisingly, the chain length of the alkyl groups. Under these conditions the lead ion within each of the peripherally substituted octaalkyl lead phthalocyanines was more labile than that in the non-peripherally substituted isomer.
