Molecular Solids

Theory of Heat Capacity - Solid Phase
... For matter in a crystalline solid phase, the Dulong-Petit law, which was discovered empirically, states that the mole-specific heat capacity assumes the value 3 R ... Indeed, for solid metallic chemical elements at room temperature, molar heat capacities range from about 2.8 R to 3.4 R ... Large exceptions at the lower end involve solids composed of relatively low-mass, tightly bonded atoms, such as beryllium at 2.0 R, and diamond at only 0.735 R ...

John Meurig Thomas - Selected Scientific Publications - Part 1: On The Design and Application of Solid Catalysts
... Molecular Catalysis, 27, 157-167, 1984 ... production of ethyl acetate.) Uniform heterogeneous catalysts The role of solid-state chemistry in their development and design, J.M ... Solid acid catalysts, J.M ...

Molecular Solid
... Molecular solid is a solid composed of molecules held together by the van der Waals forces ... Because these dipole forces are weaker than covalent or ionic bonds, molecular solids are soft and have relatively low melting temperature ... Pure molecular solids are electrical insulators but they can be made conductive by doping ...

Molecular Solid - Properties
... Weakness of intermolecular forces results in low melting temperatures of molecular solids ... melting point of metals and ionic solids is ~1000 °C, most molecular solids melt well below ~300 °C (see table), thus many corresponding substances are either liquid (ice) or gaseous (oxygen) at room ... Molecular solids also have relatively low density and hardness ...