Tungsten tetrabromide (WBr4) and tungsten hexabromide (WBr6) have significant differences in crystal structure.
The crystal structure of tungsten tetrabromide belongs to the monoclinic system, and its crystal structure can be described as a layered structure. In this structure, tungsten atoms form a central plane surrounded by four bromine atoms. The layers are stacked vertically through van der Waals interactions. This structure makes tungsten tetrabromide have a certain layered exfoliation.
The crystal structure of tungsten hexabromide belongs to the orthorhombic system, and its crystal structure can be described as an octahedral structure composed of tungsten and bromine atoms. The tungsten atom is located at the center of the octahedron, and the six bromine atoms are located at the six vertices of the octahedron. This structure has high symmetry and close packing, so the crystal structure of tungsten hexabromide is relatively stable.
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