data_2012620 _journal_name_full 'Acta Crystallographica, Section C' _journal_year 2002 _journal_volume 58 _journal_page_first i45 _journal_page_last i46 _publ_section_title ; Tetrapotassium nonastannide, K~4~Sn~9~ ; loop_ _publ_author_name 'Hoch, Constantin' 'Wendorff, Marco' 'R\"ohr, Caroline' _chemical_formula_moiety 'K4 Sn9' _chemical_formula_sum 'K4 Sn9' _chemical_formula_iupac 'K4 Sn9' _chemical_formula_weight 1224.61 _symmetry_cell_setting 'monoclinic' _symmetry_space_group_name_H-M 'P 21/c' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, y+1/2, -z+1/2' '-x, -y, -z' 'x, -y-1/2, z-1/2' _cell_length_a 14.238(2) _cell_length_b 8.3554(13) _cell_length_c 16.487(3) _cell_angle_alpha 90.00 _cell_angle_beta 95.261(3) _cell_angle_gamma 90.00 _cell_volume 1953.2(5) _cell_formula_units_Z 4 _cell_measurement_temperature 293(2) _exptl_crystal_density_diffrn 4.165 _diffrn_ambient_temperature 293(2) loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_calc_flag _atom_site_refinement_flags _atom_site_occupancy _atom_site_disorder_assembly _atom_site_disorder_group _atom_site_type_symbol Sn1 0.29271(4) 0.61971(7) 0.24040(4) 0.04424(15) Uani d . 1 . . Sn Sn2 0.12208(4) 0.60221(6) 0.12012(3) 0.03745(13) Uani d . 1 . . Sn Sn3 0.18159(4) 0.32550(6) 0.25293(3) 0.03628(13) Uani d . 1 . . Sn Sn4 0.39013(4) 0.31956(7) 0.20216(3) 0.03980(14) Uani d . 1 . . Sn Sn5 0.32767(4) 0.61046(6) 0.06830(4) 0.04254(14) Uani d . 1 . . Sn Sn6 0.07469(3) 0.25753(6) 0.09188(3) 0.03736(13) Uani d . 1 . . Sn Sn7 0.17431(4) 0.43065(7) -0.03032(3) 0.04244(14) Uani d . 1 . . Sn Sn8 0.35443(4) 0.26749(6) 0.02620(3) 0.03940(14) Uani d . 1 . . Sn Sn9 0.25244(4) 0.07640(6) 0.14252(3) 0.03556(13) Uani d . 1 . . Sn K1 0.07578(12) 0.5710(2) 0.76158(11) 0.0464(5) Uani d . 1 . . K K2 0.50822(13) 0.4386(2) 0.38471(11) 0.0499(5) Uani d . 1 . . K K3 0.16211(14) 0.5654(2) 0.44653(12) 0.0557(5) Uani d . 1 . . K K4 0.61160(13) 0.4697(2) 0.14277(11) 0.0483(5) Uani d . 1 . . K loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Sn1 0.0509(4) 0.0366(3) 0.0445(4) -0.0048(3) 0.0003(3) -0.0147(2) Sn2 0.0362(3) 0.0318(3) 0.0455(4) 0.0073(2) 0.0100(2) -0.0015(2) Sn3 0.0416(3) 0.0361(3) 0.0329(3) -0.0011(2) 0.0128(2) -0.0024(2) Sn4 0.0302(3) 0.0431(3) 0.0442(4) 0.0024(2) -0.0065(2) -0.0066(2) Sn5 0.0443(3) 0.0337(3) 0.0521(4) -0.0077(2) 0.0176(3) 0.0004(2) Sn6 0.0281(3) 0.0384(3) 0.0458(3) -0.0065(2) 0.0046(2) -0.0048(2) Sn7 0.0411(3) 0.0568(4) 0.0295(3) 0.0032(3) 0.0035(2) 0.0034(2) Sn8 0.0472(3) 0.0373(3) 0.0363(3) 0.0140(2) 0.0176(2) 0.0065(2) Sn9 0.0339(3) 0.0272(3) 0.0469(3) -0.0016(2) 0.0111(2) -0.0023(2) K1 0.0444(10) 0.0439(11) 0.0535(12) 0.0068(8) 0.0183(9) -0.0017(8) K2 0.0536(12) 0.0516(12) 0.0435(12) -0.0201(9) -0.0007(9) 0.0000(8) K3 0.0570(13) 0.0637(13) 0.0454(12) 0.0131(10) -0.0007(9) 0.0058(9) K4 0.0565(12) 0.0467(11) 0.0437(11) 0.0016(9) 0.0149(9) 0.0087(8) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_site_symmetry_2 _geom_bond_distance _geom_bond_publ_flag Sn1 Sn5 . 2.9264(9) n Sn1 Sn3 . 2.9409(8) n Sn1 Sn4 . 2.9616(9) n Sn1 Sn2 . 2.9955(9) n Sn1 K4 2_655 3.6926(19) n Sn1 K2 . 4.003(2) n Sn1 K3 . 4.046(2) n Sn1 K1 4_575 4.0669(19) n Sn2 Sn6 . 2.9847(9) n Sn2 Sn7 . 3.0163(8) n Sn2 Sn5 . 3.1243(9) n Sn2 Sn3 . 3.2431(8) n Sn2 K1 4_575 3.6897(19) n Sn2 K1 3_566 3.8526(19) n Sn2 K3 4_575 4.065(2) n Sn3 Sn6 . 2.9913(8) n Sn3 Sn9 . 3.0000(8) n Sn3 Sn4 . 3.1584(9) n Sn3 K1 4_565 3.6473(19) n Sn3 K1 3_566 3.7514(19) n Sn3 K3 . 3.801(2) n Sn4 Sn9 . 2.9299(8) n Sn4 Sn8 . 2.9314(9) n Sn4 Sn5 . 3.3480(9) n Sn4 K2 . 3.4565(19) n Sn4 K4 . 3.6113(19) n Sn4 K2 2_645 3.8282(19) n Sn4 K4 2_645 3.885(2) n Sn5 Sn8 . 2.9812(9) n Sn5 Sn7 . 3.0029(9) n Sn5 K2 2_655 3.640(2) n Sn5 K4 3_665 3.723(2) n Sn5 K3 4_575 4.007(2) n Sn6 Sn7 . 2.9475(8) n Sn6 Sn9 . 3.0008(8) n Sn6 K1 3_566 3.6646(18) n Sn6 K3 2_545 3.735(2) n Sn6 K3 4_565 3.889(2) n Sn6 K1 4_565 3.9183(19) n Sn7 Sn8 . 2.9775(8) n Sn7 K1 1_554 3.773(2) n Sn7 K4 3_665 3.8025(19) n Sn7 K3 4_565 4.165(2) n Sn8 Sn9 . 2.9742(8) n Sn8 K2 2_645 3.6061(18) n Sn8 K4 3_665 3.6146(18) n Sn8 K2 4_565 3.7604(19) n Sn8 K3 4_565 4.038(2) n Sn9 K1 4_565 3.5499(18) n Sn9 K3 4_565 3.569(2) n Sn9 K2 2_645 3.6632(19) n Sn9 K4 2_645 3.977(2) n K1 Sn9 4_566 3.5499(18) n K1 Sn3 4_566 3.6472(19) n K1 Sn6 3_566 3.6647(18) n K1 Sn2 4_576 3.6897(19) n K1 Sn3 3_566 3.7515(19) n K1 Sn7 1_556 3.772(2) n K1 Sn2 3_566 3.8526(19) n K1 Sn6 4_566 3.9183(19) n K1 Sn1 4_576 4.0669(19) n K2 Sn8 2_655 3.6061(18) n K2 Sn5 2_645 3.640(2) n K2 Sn9 2_655 3.6632(19) n K2 Sn8 4_566 3.7604(19) n K2 Sn4 2_655 3.8283(19) n K3 Sn9 4_566 3.569(2) n K3 Sn6 2 3.735(2) n K3 Sn6 4_566 3.889(2) n K3 Sn5 4_576 4.007(2) n K3 Sn8 4_566 4.038(2) n K3 Sn2 4_576 4.065(2) n K3 Sn7 4_566 4.165(2) n K4 Sn8 3_665 3.6145(18) n K4 Sn1 2_645 3.6926(19) n K4 Sn5 3_665 3.723(2) n K4 Sn7 3_665 3.8025(19) n K4 Sn4 2_655 3.885(2) n K4 Sn9 2_655 3.977(2) n