Packing on the tetrahedra of sulphur atoms around p-factor atoms in the constructions on the AgGaS2, AgGaGeS4 and KGaGeS4 compounds.The thermal Qualities of orthorhombic AgGaGeS4 and chalcopyrite AgGaS2 crystals together with thermal enlargement, certain warmth and thermal conductivity happen to be investigated. For AgGaS2 crystal, We've got correc