Ca2(NH4)2P6O18.6H2O Averbuch-Pouchot M T Acta Crystallographica C46 (1990) 2005-2007 Crystal chemistry of cyclo-hexaphosphates. XII. structure of ammonium calcium cyclo-hexaphosphate hexahydrate _database_code_amcsd 0010197 12.821 12.537 7.029 90 90 90 P2_12_12_1 atom x y z Biso Ca .17488 .24882 .1593 .97 P1 .15055 .15864 .6741 1.01 P2 .82400 .01642 .9398 1.01 P3 .95109 .20767 .8658 .99 N1 0 0 .354 2.6 N2 .5 0 -.012 3.5 OE11 .8259 .8364 .4684 1.67 OE12 .7925 .7731 .8109 1.47 OL12 .1599 .0363 .7345 1.72 OL13 .5271 .3244 .3062 1.61 O221 .1606 .0647 .0910 1.48 O222 .2269 .4205 .0618 1.80 OL23 .9232 .0935 .9527 1.65 O231 .8564 .2555 .7788 1.47 O232 .0097 .2670 .0117 1.55 Wat1 .4374 .8673 .6504 2.60 Wat2 .3906 .2859 .6161 4.6 Wat3 .8551 .5199 .6632 6.0 H1N1 .543 .467 .69 5 H2N1 .537 .578 .60 3 H1N2 .939 .481 .95 4 H2N2 .002 .446 .06 4 H1W1 .563 .099 .53 4 H2W1 .530 .188 .65 4 H1W2 .156 .773 .30 4 H2W2 .872 .226 .52 4 H1W3 .627 .062 .40 5 H2W3 .311 .934 .24 5