Interplay of Magnetism and Bonding in GaV4‒xCrxSe8
Bichler, Daniel; Johrendt, Dirk; Chemistry of Materials 23 (2011) 3014–; doi:10.1021/cm200776v

data_4000776
_publ_contact_author
;
        Prof. Dirk Johrendt
        Department Chemie und Biochemie
        Ludwig-Maximilians-Universit\"at M\"unchen
        Butenandtstrasse 5 - 13 (D)
        D 81377 M\"unchen
        Germany
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_publ_section_title
;
 Interplay of Magnetism and Bonding in GaV4--xCrxSe8
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_journal_issue                   11
_journal_name_full               'Chemistry of Materials'
_journal_page_first              3014
_journal_paper_doi               10.1021/cm200776v
_journal_volume                  23
_journal_year                    2011
_chemical_formula_structural     'Cr2 Ga1 Se8 V2'
_chemical_formula_sum            'Cr2 Ga Se8 V2'
_chemical_formula_weight         907.28
_chemical_name_systematic
;
 Gallium chromium vanadium selenide (1/2/2/8)
;
_space_group_IT_number           216
_symmetry_cell_setting           cubic
_symmetry_space_group_name_Hall  'F -4 2 3'
_symmetry_space_group_name_H-M   'F -4 3 m'
_atom_sites_solution_hydrogens   none
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.1623(12)
_cell_length_b                   10.1623(12)
_cell_length_c                   10.1623(12)
_cell_measurement_reflns_used    5345
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      37.785
_cell_measurement_theta_min      3.134
_cell_volume                     1049.5(2)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD; rotation images; thick slices'
_diffrn_radiation_monochromator  'vertically mounted graphite crystal'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0395
_diffrn_reflns_av_sigmaI/netI    0.0171
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            6438
_diffrn_reflns_theta_full        37.79
_diffrn_reflns_theta_max         37.79
_diffrn_reflns_theta_min         3.47
_exptl_absorpt_coefficient_mu    33.937
_exptl_absorpt_correction_type   sphere
_exptl_absorpt_process_details   'SADABS v. 2, Sheldrick, 2001'
_exptl_crystal_colour            metallic-black
_exptl_crystal_density_diffrn    5.742
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1588
_exptl_crystal_size_max          0.04
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.566
_refine_diff_density_min         -1.146
_refine_diff_density_rms         0.230
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.119
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     11
_refine_ls_number_reflns         329
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.119
_refine_ls_R_factor_all          0.0215
_refine_ls_R_factor_gt           0.0209
_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^)+(0.0302P)^2^+2.8433P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0499
_refine_ls_wR_factor_ref         0.0501
_reflns_number_gt                320
_reflns_number_total             329
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cm200776v_si_004.cif
_cod_data_source_block           f-43mabs-GaCr2V2Se8
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_formula_sum        'Cr2 Ga1 Se8 V2'
_cod_database_code               4000776