Sinoite Idrestedt I, Brosset C Acta Chemica Scandinavica 18 (1964) 1879-1886 Structure of Si2N2O Locality: synthetic _database_code_amcsd 0011899 8.843 5.473 4.835 90 90 90 Cmc2_1 atom x y z Biso Si .1763 .1509 .2898 .42 N .218 .121 .642 1.54 O 0 .214 .230 .35