Related Experiment Video
Updated: Jun 1, 2026

Manganese Oxide Nanoparticle Synthesis by Thermal Decomposition of Manganese(II) Acetylacetonate
Published on: June 18, 2020
Bis(2,2'-bipyridine N,N'-dioxide)bis-(tri-cyano-methanido)manganese(II)
Abstract:
In the title complex, [Mn(C(4)N(3))(2)(C(10)H(8)N(2)O(2))(2)], the Mn(II) atom lies on an inversion center and is coordinated by two 2,2'-bipyridine N,N'-dioxide (dpdo) mol-ecules and two tricyano-methanide (tcm) ligands to form a distorted octa-hedral geometry. Weak inter-molecular C-H⋯O or C-H⋯N hydrogen bonds, involving either the O atom of the dpdo mol-ecule and the pyridyl H atom, or the N atom of the tcm anion and the pyridyl H atom, result in the formation of a three-dimensional network structure.
Related Concept Videos
Valence Bond Theory
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...
Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Coordination Number and Geometry
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.
Coordination Compounds and Nomenclature

