#------------------------------------------------------------------------------ #$Date: 2008-01-13 22:15:36 +0000 (Sun, 13 Jan 2008) $ #$Revision: 14 $ #$URL: svn://www.crystallography.net/cod/cif/2/2003437.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_2003437 _journal_name_full 'Acta Crystallographica' _journal_year 1995 _journal_volume C51 _journal_page_first 792 _journal_page_last 794 _publ_section_title ; Orthorhombic MnAl~3~ ; _chemical_formula_sum 'Mn3.01(6) Al9.99(6)' _chemical_formula_weight 434.83 loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '1/2+x,y,1/2-z' 'x,1/2-y,z' '1/2-x,1/2+y,1/2+z' '-x,-y,-z' '1/2-x,-y,1/2+z' '-x,1/2+y,-z' '1/2+x,1/2-y,1/2-z' _symmetry_space_group_name_H-M 'P n m a' _cell_length_a 14.883(3) _cell_length_b 12.447(4) _cell_length_c 12.560(3) _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 2327(1) _cell_formula_units_Z 12 _exptl_crystal_density_diffrn 3.724 _exptl_crystal_density_meas ? _diffrn_radiation_type 'MoK\a' _diffrn_radiation_wavelength 0.71073 _cell_measurement_reflns_used 25 _cell_measurement_theta_min 8.5 _cell_measurement_theta_max 19 _exptl_absorpt_coefficient_mu 5.842 _cell_measurement_temperature 293 _exptl_crystal_description 'needle' _exptl_crystal_size_max 0.049 _exptl_crystal_size_mid 0.013 _exptl_crystal_size_min 0.009 _exptl_crystal_size_rad ? _exptl_crystal_colour 'silverish' _chemical_compound_source ? _diffrn_measurement_device 'CAD-4' _diffrn_measurement_method '\w/2\q' _exptl_absorpt_correction_type 'analytical' _exptl_absorpt_correction_T_min 0.0227 _exptl_absorpt_correction_T_max 0.0575 _diffrn_reflns_number 4412 _reflns_number_total 1142 _reflns_number_observed 462 _reflns_observed_criterion F>3\s(F) _diffrn_reflns_av_R_equivalents 0.18 _diffrn_reflns_theta_max 20 _diffrn_reflns_limit_h_min 0 _diffrn_reflns_limit_h_max 11 _diffrn_reflns_limit_k_min 0 _diffrn_reflns_limit_k_max 12 _diffrn_reflns_limit_l_min 0 _diffrn_reflns_limit_l_max 14 _diffrn_standards_number 2 _diffrn_standards_interval_count ? _diffrn_standards_interval_time 60 _diffrn_standards_decay_% '2.7, 2.2' _refine_ls_structure_factor_coef F _refine_ls_R_factor_obs 0.045 _refine_ls_wR_factor_obs 0.025 _refine_ls_goodness_of_fit_obs 1.316 _refine_ls_number_reflns 462 _refine_ls_number_parameters 175 _refine_ls_hydrogen_treatment ? _refine_ls_weighting_scheme '1/\s^2^(F)' _refine_ls_shift/esd_max 0.0007 _refine_diff_density_max 2.70 _refine_diff_density_min -3.51 _refine_ls_extinction_method 'Zachariasen (1968)' _refine_ls_extinction_coef 'g = 0.005' _atom_type_scat_source 'IntTabIV' loop_ _atom_site_label _atom_site_occupancy _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Mn(1) 'Mn: 0.50(3), Al: 0.50(3)' 8d .1281(3) .0628(7) .1592(8) .009(2) Mn(2) 1 8d .1798(4) .5575(5) .3466(7) .009(1) Mn(3) 'Mn: 0.40(3), Al: 0.60(3)' 8d .3167(6) .061(1) .4607(8) .008(3) Mn(4) 1 4c .052(1) .25 .453(1) .013(4) Mn(5) 'Mn: 0.53(5), Al: 0.47(5)' 4c .058(1) .25 .242(1) .005(5) Mn(6) 1 4c .2249(8) .25 .5236(7) .006(4) Mn(7) 1 4c .2348(7) .25 .1749(9) .008(4) Mn(8) 'Mn: 0.64(4), Al: 0.36(4)' 4c .3343(6) .25 .346(1) .006(3) Mn(9) 1 4c .5417(6) .25 .647(1) .007(3) Al(1) 1 8d .0162(5) .066(1) .350(1) .005(2) Al(2) 1 8d .051(1) .626(1) .460(1) .005(2) Al(3) 1 8d .050(1) .622(1) .240(1) .019(4) Al(4) 1 8d .1299(6) .065(1) .535(1) .011(3) Al(5) 1 8d .180(1) .1475(7) .350(1) .012(3) Al(6) 1 8d .2264(9) .6221(9) .162(1) .010(4) Al(7) 1 8d .265(1) .124(1) .026(1) .013(5) Al(8) 1 8d .3097(7) .066(1) .2298(8) .010(3) Al(9) 1 8d .3371(7) .6224(7) .337(1) .018(4) Al(10) 1 8d .4587(7) .1081(9) .349(1) .012(4) Al(11) 1 8d .5193(8) .079(1) .549(1) .013(4) Al(12) 1 4c .094(1) .25 .659(1) .006(5) Al(13) 1 4c .105(1) .25 .039(2) .026(7) Al(14) 1 4c .318(1) .25 .845(2) .011(4) Al(15) 1 4c .399(1) .25 .540(1) .011(6) Al(16) 1 4c .403(1) .25 .148(2) .016(5)