منابع مشابه
Trigonal prismatic metal complexes: a not so rare coordination geometry?
The solid state structures of two metal complexes of a hexaamine macrobicyclic ligand, in which the metal ion has an exact trigonal prismatic geometry, have been determined. Theoretical calculations showed this is the most stable geometry for d(0), d(10) and high spin d(5) metal complexes of the ligand with M-N bond distances >∼2.35 Å.
متن کاملShaping and enforcing coordination spheres: probing the ability of tripodal ligands to favour trigonal prismatic geometry.
We report two tripodal frameworks, mono(2,2'-bipyrid-6-yl)bis(2-pyridyl)methanol () and bis(2,2'-bipyrid-6-yl)mono(2-pyridyl)methanol () which have one and two bipyridyl arms, respectively. Both ligands form complexes with the first row transition metals. Both ligands appear to overcome the steric strain involved in twisting the ligand to produce an octahedral complex and the solid state struct...
متن کاملMagnetic anisotropy of a CoII single ion magnet with distorted trigonal prismatic coordination: theory and experiment.
The single ion magnetic properties of Co(ii) are affected by the details of the coordination geometry of the ion. Here we show that a geometry close to trigonal prismatic which arises when the ligand 6,6'-((1Z)-((piperazine-1,4-diylbis(propane-3,1-diyl))bis(azanylylidene))bis(methanylylidene))bis(2-methoxyphenol) coordinates to Co(ii) does indeed lead to enhanced single-ion behaviour as has pre...
متن کاملSlow magnetic relaxation in a trigonal prismatic uranium(III) complex.
Results of ac magnetic susceptibility measurements performed on the trigonal prismatic complex U(Ph(2)BPz(2))(3) demonstrate the presence of slow magnetic relaxation under zero applied dc field. Analysis of both the temperature and frequency dependence of the ac susceptibility indicate a temperature regime (T > approximately 3 K) where Arrhenius behavior dominates the relaxation processes, lead...
متن کاملThe asc trinodal platform: two-step assembly of triangular, tetrahedral, and trigonal-prismatic molecular building blocks.
Metal–organic materials (MOMs) assembled from metalbased or organic molecular building blocks (MBBs) and organic linkers have attracted increasing scientific interest during the past decade. Their structure (especially their modularity) and properties (especially extra-large surface area) have made them an attractive class of porous materials for applications including gas purification and stor...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 1993
ISSN: 0108-7673
DOI: 10.1107/s0108767378093629