data_5000187 _chemical_formula_sum 'C9 H8 O2' _symmetry_cell_setting monoclinic _symmetry_space_group_name_H-M 'P 21/n' _symmetry_Int_Tables_number 14 loop_ _symmetry_equiv_pos_site_id _symmetry_equiv_pos_as_xyz 1 x,y,z 2 1/2-x,1/2+y,1/2-z 3 -x,-y,-z 4 -1/2+x,-1/2-y,-1/2+z _cell_length_a 7.7163(18) _cell_length_b 17.6101(68) _cell_length_c 5.5655(19) _cell_angle_alpha 90 _cell_angle_beta 96.396(24) _cell_angle_gamma 90 _cell_formula_units_Z 4 loop_ _atom_type_symbol _atom_type_radius_bond C 0.68 H 0.23 O 0.68 loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z O1 O 0.7883(5) 0.0070(2) 0.0511(7) O2 O 0.9176(5) 0.0493(2) -0.2641(7) C1 C 0.7834(7) 0.0383(3) -0.149(1) C2 C 0.6130(7) 0.0656(3) -0.269(1) C3 C 0.6002(7) 0.1021(3) -0.478(1) C4 C 0.4370(7) 0.1317(3) -0.612(1) C5 C 0.4480(7) 0.1739(3) -0.821(1) C6 C 0.2973(8) 0.2030(3) -0.949(1) C7 C 0.1368(8) 0.1899(3) -0.866(1) C8 C 0.1258(7) 0.1490(3) -0.660(1) C9 C 0.2742(7) 0.1194(3) -0.530(1) H1 H 1.04200 0.03000 -0.19600 H2 H 0.50400 0.03900 -0.20600 H3 H 0.71000 0.11300 -0.53200 H4 H 0.57100 0.18400 -0.88300 H5 H 0.29900 0.22700 -1.10000 H6 H 0.03500 0.21400 -0.94300 H7 H 0.02300 0.13300 -0.58600 H8 H 0.27200 0.08300 -0.38000