[B4O9H2] Cyclic Borate Units as the Building Unit in a Family of Zinc Borate Structures
Paul, Avijit Kumar; Sachidananda, K.; Natarajan, Srinivasan; Crystal Growth & Design 10 (2010) 456–; doi:10.1021/cg901054h

data_4502369
_publ_section_title
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 [B4O9H2] Cyclic Borate Units as the Building Unit in a Family of Zinc
 Borate Structures
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_journal_issue                   1
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              456
_journal_paper_doi               10.1021/cg901054h
_journal_volume                  10
_journal_year                    2010
_chemical_absolute_configuration ad
_chemical_formula_sum            'C3 H12 B4 N2 O8 Zn'
_chemical_formula_weight         312.76
_chemical_name_common            &#x0091;Zinc-Borate&#x0092;
_chemical_name_systematic
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 ?
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_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.0474(3)
_cell_length_b                   7.8332(3)
_cell_length_c                   19.2197(7)
_cell_measurement_reflns_used    2012
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.00
_cell_measurement_theta_min      3.59
_cell_volume                     1061.00(7)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        SAINT
_computing_molecular_graphics
'Ortep-3 for windows (Farrugia, 1999) and CAMERON (Watkin et al., 1993)'
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1993)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.974
_diffrn_measured_fraction_theta_max 0.974
_diffrn_measurement_device_type  'Bruker SMART CCD area detector'
_diffrn_measurement_method       '\f and \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  0.0420
_diffrn_reflns_av_sigmaI/netI    0.0400
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            6196
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.59
_exptl_absorpt_coefficient_mu    2.348
_exptl_absorpt_correction_T_max  0.9119
_exptl_absorpt_correction_T_min  0.7659
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.958
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Rectangular
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.04
_refine_diff_density_max         1.575
_refine_diff_density_min         -0.595
_refine_diff_density_rms         0.104
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         2012
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0400
_refine_ls_R_factor_gt           0.0369
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0682P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0970
_refine_ls_wR_factor_ref         0.0987
_reflns_number_gt                1874
_reflns_number_total             2012
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg901054h_si_001.cif
_cod_data_source_block           Compound(I)
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      P212121
_cod_database_code               4502369