Li5Rb2B7O14: a new congruently melting compound with two kinds of B‒O one-dimensional chains and short UV absorption edge
Yang, Yun; Pan, Shilie; Hou, Xueling; Dong, Xiaoyu; Su, Xin; Yang, Zhihua; Zhang, Min; Zhao, Wenwu; Chen, Zhaohui; CrystEngComm 14 (2012) 6720–; doi:10.1039/c2ce06742k

data_7208643
_publ_section_title
;
 Li5Rb2B7O14: a new congruently melting compound with two kinds of B--O
 one-dimensional chains and short UV absorption edge
;
_journal_issue                   20
_journal_name_full               CrystEngComm
_journal_page_first              6720
_journal_paper_doi               10.1039/c2ce06742k
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'B7 Li5 O14 Rb2'
_chemical_formula_weight         505.31
_chemical_name_systematic
;
?
;
_space_group_IT_number           40
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'A 2 -2a'
_symmetry_space_group_name_H-M   'A m a 2'
_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                   20.376(2)
_cell_length_b                   13.5114(13)
_cell_length_c                   4.3900(4)
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      24.99
_cell_measurement_theta_min      2.00
_cell_volume                     1208.6(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SMART'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0525
_diffrn_reflns_av_sigmaI/netI    0.0362
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -4
_diffrn_reflns_number            2864
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.00
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    8.179
_exptl_absorpt_correction_T_max  0.5607
_exptl_absorpt_correction_T_min  0.1769
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.777
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chip
_exptl_crystal_F_000             944
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.394
_refine_diff_density_min         -0.466
_refine_diff_density_rms         0.089
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.014(13)
_refine_ls_extinction_coef       0.0104(6)
_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   1.069
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     134
_refine_ls_number_reflns         1024
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0265
_refine_ls_R_factor_gt           0.0248
_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^)+(0.0396P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0588
_refine_ls_wR_factor_ref         0.0592
_reflns_number_gt                983
_reflns_number_total             1024
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce06742k.txt
_cod_data_source_block           4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

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_sg_symbol_H-M      Ama2
_cod_database_code               7208643