ˈiːtʃ tˈɪn ˈæɾəm ɪz kˈoʊvələntli bˈɑːndᵻd tə θɹˈiː nˈeɪbɚɹɪŋ sɛlˈiːniəm ˈæɾəmz, ænd ˈiːtʃ sɛlˈiːniəm ˈæɾəm ɪz kˈoʊvələntli bˈɑːndᵻd tə θɹˈiː nˈeɪbɚɹɪŋ tˈɪn ˈæɾəmz.
Each tin atom is covalently bonded to three neighboring selenium atoms, and each selenium atom is covalently bonded to three neighboring tin atoms.