Summary

The crystal structure of C(18)H(10)N(4) reveals specific dihedral angles between its pyrazine and phenyl rings. Weak pi-pi interactions likely contribute to stabilizing this molecular arrangement.

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Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles

Naming Amides
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Five-Membered Heterocyclic Aromatic Compounds: Overview

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Basicity of Heterocyclic Aromatic Amines01:25

Basicity of Heterocyclic Aromatic Amines

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Aldehydes and Ketones with HCN: Cyanohydrin Formation Overview

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Aromatic Hydrocarbon Cations: Structural Overview

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Removing one hydrogen from the intervening CH2 group with both...
Structures of Carboxylic Acid Derivatives01:28

Structures of Carboxylic Acid Derivatives

Structure of Carboxylic Acid Derivatives
Carboxylic acid derivatives contain an acyl group attached to a heteroatom such as chlorine, oxygen, or nitrogen. The carbonyl carbon and oxygen are both sp2-hybridized with an unhybridized p orbital.
The three sp2 orbitals of the carbonyl carbon form three σ bonds, one each with the carbonyl oxygen, the α carbon, and the heteroatom, whereas the other two sp2 orbitals of the carbonyl oxygen are occupied by the lone pairs. Further, the unhybridized p...