Related Experiment Video
Updated: Jun 1, 2026

Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures
Published on: August 10, 2017
Di-μ-iodido-bis{[hydroxy(methoxy)bis(2-pyridyl)methane-κN,O,N']iodidocadmium(II)}
Abstract:
In the centrosymmetric dinuclear title compound, [Cd(2)I(4)(C(12)H(12)N(2)O(2))(2)], two μ-I atoms bridge two Cd(II) atoms and each Cd(II) atom is also bonded to a terminal I atom and a hy-droxy-meth-oxy-bis-(2-pyrid-yl)methane ligand, which functions in an N,O,N'-tridentate mode, resulting in a distorted octa-hedral coordination environment. Inter-molecular O-H⋯I hydrogen bonds and π-π stacking inter-actions between the pyridine rings [centroid-centroid distance = 3.790 (2) Å] are present in the crystal structure.
More Related Videos
11:27Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging
Published on: December 4, 2016
09:45Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
Related Concept Videos
Coordination Compounds and Nomenclature
Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
Valence Bond Theory
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...