Coordination compounds consisting of a central metal atom bonded to surrounding ligands.
Solid phases containing two or more metallic elements with metallic bonding.
Three-dimensional lattices held by electrostatic forces between cations and anions.
Discrete units held together by covalent bonds, typically with low melting points.
Extended structures held by continuous covalent bonds, such as diamond or quartz.
Classification based on the nature of chemical bonding and structural arrangement.