Selenium
	Cherin P, Unger P
	Acta Crystallographica B28 (1972) 313-317
	Refinement of the crystal structure of alpha-monoclinic Se
	Locality: synthetic
	Sample: at T = 26 C
	Note: structure known as alpha phase
	_database_code_amcsd 0009424
	9.054 9.083 11.601 90 90.81 90 P2_1/n
	atom x y z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
	Se1 .3209 .4840 .2362 .0495 .0468 .0584 .0111 -.0077 -.0019
	Se2 .4254 .6625 .3569 .0387 .0508 .0700 -.0101 -.0056 -.0041
	Se3 .3178 .6376 .5378 .0436 .0497 .0508 .0022 -.0177 .0030
	Se4 .1343 .8186 .5529 .0448 .0455 .0588 -.0032 -.0105 -.0016
	Se5 -.0862 .6904 .5203 .0400 .0567 .0453 -.0035 -.0001 .0030
	Se6 -.1565 .7322 .3294 .0341 .0527 .0576 .0104 -.0100 .0034
	Se7 -.0814 .5217 .2290 .0481 .0402 .0487 -.0088 -.0089 .0029
	Se8 .1301 .5990 .1337 .0486 .0463 .0456 .0026 -.0060 .0001
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