As2 Cu K5 Eisenmann B, Klein J, Somer M Journal of Alloys and Compounds 178 (1992) 431-439 Linear anions (CuAs2)5-, (AuP/2)5- and (AuAs2)5- in potassium compounds _cod_database_code 1008879 _database_code_amcsd 0016746 5.377 5.377 18.771 90 90 120 P6_3/mmc atom x y z K1 1/3 2/3 .5498 K2 0 0 .1457 K3 1/3 2/3 .75 Cu1 1/3 2/3 .25 As1 1/3 2/3 .3729