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C121, Chalcogen, Transitional, Electronic energy gap
P1113687-1
P1113687-2
P1125702-1
P1319735-1
P1319735-2
P1319736-1
P1319736-2
P1614673-1
P1614767-1
P1614806-2
P1614806-3
P1614807-2
P1614807-3
P1822301-1
P1822302-1
P1825621-1
P1914399-1
P1919296-1
P1919297-1