catena-Poly[[(2,2'-bipyridine-κN,N')copper(I)]-μ-cyanido-κC:N-[(2,2'-bipyridine-κN,N')copper(I)]-μ-thio-cyanato-κS:N]

Jun Zhao1, Wen-Wen Dong, Dong-Sheng Li

  • 1College of Mechanical and Material Engineering, Functional Materials Research Institue, Three Gorges University, Yichang 443002, People's Republic of China.

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Structural Isomerism02:34

Structural Isomerism

Isomerism in Complexes
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.
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Metal-Ligand Bonds

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Coordination Compounds and Nomenclature

In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
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[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

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Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
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