Structure of the clinopyroxene-type compound CaCuGe~2~O~6~ between 15 and 800K
Redhammer, G. J.; Tippelt, G.; Merz, M.; Roth, G.; Treutmann, W.; Amthauer, G.; Acta Crystallographica Section B 61 (2005) 367–380; doi:10.1107/S0108768105013455

data_2100246
_publ_section_title
;
 Structure of the clinopyroxene-type compound CaCuGe~2~O~6~ between 15
 and 800K
;
_journal_coeditor_code           WS5021
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              367
_journal_page_last               380
_journal_paper_doi               10.1107/S0108768105013455
_journal_volume                  61
_journal_year                    2005
_chemical_formula_sum            'Ca Cu Ge2 O6'
_chemical_formula_weight         344.8
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 105.649(12)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.1853(12)
_cell_length_b                   9.1959(7)
_cell_length_c                   5.2013(6)
_cell_measurement_reflns_used    6540
_cell_measurement_temperature    200
_cell_measurement_theta_max      32.11
_cell_measurement_theta_min      2.12
_cell_volume                     469.11(9)
_computing_cell_refinement       'Stoe X-Area (Stoe & Cie, 1998)'
_computing_data_collection       'Stoe X-Area (Stoe & Cie, 1998)'
_computing_data_reduction        'Stoe X-Area (Stoe & Cie, 1998)'
_computing_molecular_graphics    'Diamond 2.0e (Berndt & Brandenburg, 1996)'
_computing_publication_material  'WinGX 1.64.05 (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100
_diffrn_detector_area_resol_mean 6.67
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'STOE IPDS 2'
_diffrn_measurement_method       'rotation method'
_diffrn_radiation_monochromator  'plane graphite'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0371
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            5828
_diffrn_reflns_theta_full        32.18
_diffrn_reflns_theta_max         32.18
_diffrn_reflns_theta_min         3.04
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    18.220
_exptl_absorpt_correction_T_max  0.162
_exptl_absorpt_correction_T_min  0.084
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'X-SHAPE (Stoe & Cie, 1996)'
_exptl_crystal_colour            'pale green'
_exptl_crystal_density_diffrn    4.882
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cuboid
_exptl_crystal_F_000             644
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.751
_refine_diff_density_min         -0.808
_refine_ls_extinction_coef       0.0097(5)
_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   1.074
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     92
_refine_ls_number_reflns         1626
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_gt           0.0251
_refine_ls_shift/su_max          0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0163P)^2^+1.8120P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.0523
_reflns_number_gt                1415
_reflns_number_total             1626
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ws5021.cif
_cod_data_source_block           cacu_200K
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2100246