data_2010390 _journal_name_full 'Acta Crystallographica' _journal_year 1995 _journal_volume C51 _journal_page_first 45 _journal_page_last 48 _publ_section_title ; Low-Temperature Structures of [Py~2~H]^+^[Co(CO)~4~]^-^ (Py = pyridine) and [(tmen)H]^+^[Co(CO)~4~]^-^ (tmen = tetramethylethylenediamine) ; loop_ _publ_author_name 'Brammer, L.' 'Zhao, D.' _chemical_formula_moiety 'C14 H11 Co1 N2 O4' _chemical_formula_sum 'C14 H11 Co1 N2 O4' _chemical_formula_weight 330.2 _symmetry_cell_setting monoclinic _symmetry_space_group_name_H-M 'P 21/c' _symmetry_space_group_name_Hall '-P 2ybc' loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' 'x,1/2-y,1/2+z' '-x,-y,-z' '-x,1/2+y,1/2-z' _cell_length_a 7.079(3) _cell_length_b 14.290(4) _cell_length_c 14.828(5) _cell_angle_alpha 90. _cell_angle_beta 93.22(3) _cell_angle_gamma 90. _cell_volume 1497.7(9) _cell_formula_units_Z 4 _cell_measurement_temperature 128(5) _exptl_crystal_density_diffrn 1.464 _refine_ls_R_factor_obs 0.0417 _refine_ls_wR_factor_obs 0.0440 loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Co .12480(10) .24400(10) .20340(10) .0220(10) C(1) .0927(5) .1838(2) .3062(2) .0300(10) C(2) .3656(5) .2536(2) .1856(2) .0270(10) C(3) .0228(5) .3561(2) .2176(2) .0270(10) C(4) .0119(5) .1862(2) .1101(2) .0290(10) O(1) .0741(4) .1486(2) .3745(2) .0420(10) O(3) -.0420(4) .4284(2) .2279(2) .0360(10) O(2) .5267(4) .2607(2) .1731(2) .0440(10) O(4) -.0601(4) .1498(2) .0477(2) .0440(10) N(1) .4796(4) .6676(2) .5884(2) .0260(10) C(11) .3595(5) .6072(2) .6228(2) .0280(10) C(12) .4088(6) .5149(2) .6396(2) .0310(10) C(13) .5881(6) .4854(2) .6197(2) .0310(10) C(14) .7126(5) .5482(2) .5843(2) .0290(10) C(15) .6531(5) .6393(2) .5693(2) .0280(10) N(2) .3778(4) .8440(2) .5681(2) .0250(10) C(21) .2878(4) .8744(2) .4922(2) .0260(10) C(22) .2323(4) .9659(2) .4820(2) .0240(10) C(23) .2674(4) 1.0272(2) .5532(2) .0240(10) C(24) .3604(5) .9951(2) .6318(2) .0270(10) C(25) .4135(5) .9028(2) .6372(2) .0280(10) H(11) .225(5) .631(2) .640(2) .029(9) H(12) .328(5) .473(3) .665(2) .041(11) H(13) .629(5) .421(2) .630(2) .040(10) H(14) .837(5) .533(2) .569(2) .039(11) H(15) .733(5) .691(3) .543(2) .042(11) H(1) .408(7) .756(3) .578(3) .075(15) H(21) .263(4) .8346(19) .4475(19) .016(7) H(22) .172(5) .984(2) .429(2) .035(10) H(23) .224(5) 1.089(2) .548(2) .028(9) H(24) .384(5) 1.035(2) .677(2) .029(9) H(25) .476(5) .878(2) .689(2) .028(9) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_site_symmetry_1 _geom_bond_site_symmetry_2 _geom_bond_distance _geom_bond_publ_flag Co C(1) . . 1.776(3) yes Co C(3) . . 1.775(3) yes C(1) O(1) . . 1.146(4) yes C(3) O(3) . . 1.144(4) yes N(1) C(11) . . 1.333(4) yes N(1) H(1) . . 1.37(4) no C(11) H(11) . . 1.06(3) no C(12) H(12) . . 0.93(4) no C(13) H(13) . . 0.97(3) no C(14) H(14) . . 0.95(4) no H(1) N(2) . . 1.28(4) no N(2) C(25) . . 1.338(4) yes C(21) H(21) . . 0.88(3) no C(22) H(22) . . 0.91(3) no C(23) H(23) . . 0.94(3) no C(24) H(24) . . 0.89(3) no Co C(2) . . 1.745(4) yes Co C(4) . . 1.764(3) yes C(2) O(2) . . 1.170(5) yes C(4) O(4) . . 1.155(4) yes N(1) C(15) . . 1.338(5) yes C(11) C(12) . . 1.383(5) yes C(12) C(13) . . 1.385(6) yes C(13) C(14) . . 1.382(5) yes C(14) C(15) . . 1.383(4) yes C(15) H(15) . . 1.02(4) no N(2) C(21) . . 1.335(4) yes C(21) C(22) . . 1.371(4) yes C(22) C(23) . . 1.384(4) yes C(23) C(24) . . 1.383(4) yes C(24) C(25) . . 1.373(4) yes C(25) H(25) . . 0.93(3) no