Rare-Earth Manganese Copper Pnictides RE2Mn3Cu9Pn7 (Pn = P, As): Quaternary Ordered Variants of the Zr2Fe12P7-Type Structure
Stanislav S. Stoyko; Krishna K. Ramachandran; C. Scott Mullen; Arthur Mar; Inorganic Chemistry 52 (2013) 1040–1046; doi:10.1021/ic3023375

data_4333633
_publ_contact_author_address
; Department of Chemistry
  University of Alberta
  Edmonton, AB
  Canada  T6G 2G2
;
_publ_contact_author_email       arthur.mar@ualberta.ca
_publ_contact_author_fax         '(780) 492-8231'
_publ_contact_author_name        'Dr. Arthur Mar'
_publ_contact_author_phone       '(780) 492-5592'
_publ_section_title
;
 Rare-Earth Manganese Copper Pnictides RE2Mn3Cu9Pn7 (Pn = P, As):
 Quaternary Ordered Variants of the Zr2Fe12P7-Type Structure
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              1040
_journal_page_last               1046
_journal_paper_doi               10.1021/ic3023375
_journal_volume                  52
_journal_year                    2013
_chemical_formula_structural     'La2 Mn3 Cu9 As7'
_chemical_formula_sum            'As7 Cu9 La2 Mn3'
_chemical_formula_weight         1538.94
_chemical_name_common
;
 lanthanum manganese copper arsenide (2/3/9/7)
;
_chemical_name_systematic
;
 lanthanum manganese copper arsenide (2/3/9/7)
;
_space_group_IT_number           174
_symmetry_cell_setting           hexagonal
_symmetry_space_group_name_Hall  'P -6'
_symmetry_space_group_name_H-M   'P -6'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            1
_cell_length_a                   9.9376(6)
_cell_length_b                   9.9376(6)
_cell_length_c                   4.0194(2)
_cell_measurement_reflns_used    2214
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      32.07
_cell_measurement_theta_min      5.07
_cell_volume                     343.76(3)
_computing_cell_refinement       'Bruker SAINT 7.68A (Bruker, 2009)'
_computing_data_collection       'Bruker SMART 5.054 (Bruker, 1999)'
_computing_data_reduction        'Bruker SAINT 7.68A'
_computing_molecular_graphics    'ATOMS 5.1 (Dowty, 1999)'
_computing_publication_material  'Bruker SHELXTL 6.12'
_computing_structure_refinement  'Bruker SHELXTL 6.12'
_computing_structure_solution    'Bruker SHELXTL 6.12'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker D8/SMART APEX II CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0478
_diffrn_reflns_av_sigmaI/netI    0.0330
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            4792
_diffrn_reflns_theta_full        33.17
_diffrn_reflns_theta_max         33.17
_diffrn_reflns_theta_min         2.37
_exptl_absorpt_coefficient_mu    38.987
_exptl_absorpt_correction_T_max  0.4482
_exptl_absorpt_correction_T_min  0.0658
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'Bruker SHELXTL 6.12 (Sheldrick, 2001)'
_exptl_crystal_colour            grey
_exptl_crystal_density_diffrn    7.434
_exptl_crystal_description       needle
_exptl_crystal_F_000             681
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.03
_refine_diff_density_max         1.950
_refine_diff_density_min         -1.718
_refine_diff_density_rms         0.412
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.31(3)
_refine_ls_extinction_coef       0.0038(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.080
_refine_ls_matrix_type           full
_refine_ls_number_parameters     45
_refine_ls_number_reflns         969
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0298
_refine_ls_R_factor_gt           0.0240
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0220P)^2^+0.0331P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0486
_refine_ls_wR_factor_ref         0.0506
_reflns_number_gt                868
_reflns_number_total             969
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic3023375_si_002_10.cif
_cod_data_source_block           la2mn3cu9as7
_cod_database_code               4333633