Crystal and molecular structure of a nickel(II) macrocyclic tetra-imine complex: 5,7,7,12,12,14-hexamethyl-1,4,8,11-tetra-azacyclotetradeca-4,8,10,14-tetraenenickel(II) perchlorate

Autor:	M. F. Bailey, I. E. Maxwell
Rok vydání:	1972
Předmět:	biology Chemistry Imine chemistry.chemical_element General Chemistry biology.organism_classification Crystal Perchlorate chemistry.chemical_compound Nickel Crystallography Tetra Molecule Nickel ions Orthorhombic crystal system
Zdroj:	Journal of the Chemical Society, Dalton Transactions. :935
ISSN:	1364-5447 0300-9246
Popis:	The structure of the title compound has been determined by single-crystal X-ray analysis from photographic data and refined by least-squares techniques to R 0·12 for 1229 independent reflections. Crystals are orthorhombic, space-group Pbcn, with a= 10·62, b= 11·18, and c= 18·81 A, Z= 4. A crystallographic two-fold axis lies in the approximate plane of the macrocyclic cation, requiring the nickel ion to lie in the mean plane of the four nitrogen atoms, these deviate ± 0·18 A from the co-ordination plane, indicating some lack of flexibility in the macrocycle. Strain in the complex is also discussed in terms of deviations of the macrocycle bond and torsion angles from the expected strain-free values. This complex is compared with the related di-imine complex 5,7,7,12,12,14-hexamethyl-1,4,8,11-tetra-azacyclotetradeca-4,14-dienenickel(II) perchlorate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::67cd1fc92d5dea6c43272d6846a9fd75 https://doi.org/10.1039/dt9720000935 Zobrazit plný text záznamu