A flexible bis(pyridylcarbamate) anion receptor: binding of infinite double-stranded phosphate, [-sulfate-(H2O)2-]n, and hydrogen-bridged helical perchlorate chain
Xia, Yana; Wu, Biao; Liu, Yanyan; Yang, Zaiwen; Huang, Xiaojuan; He, Li; Yang, Xiao-Juan; CrystEngComm 11 (2009) 1849–; doi:10.1039/b904253a

data_7201059
_publ_section_title
;
 A flexible bis(pyridylcarbamate) anion receptor: binding of infinite
 double-stranded phosphate, [-sulfate-(H2O)2-]n, and hydrogen-bridged
 helical perchlorate chain
;
_journal_issue                   9
_journal_name_full               CrystEngComm
_journal_page_first              1849
_journal_paper_doi               10.1039/b904253a
_journal_volume                  11
_journal_year                    2009
_chemical_formula_sum            'C14 H16 Br2 N4 O4'
_chemical_formula_weight         464.13
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 119.75(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.881(4)
_cell_length_b                   4.9052(10)
_cell_length_c                   18.337(4)
_cell_measurement_temperature    293(2)
_cell_volume                     1708.7(8)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART APEX II'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.919
_diffrn_measurement_device_type  'Bruker APEX II area detector'
_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  0.0553
_diffrn_reflns_av_sigmaI/netI    0.0593
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            4664
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.13
_diffrn_reflns_theta_min         2.14
_exptl_absorpt_coefficient_mu    4.771
_exptl_absorpt_correction_T_max  0.4488
_exptl_absorpt_correction_T_min  0.2938
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.804
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             920
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.579
_refine_diff_density_min         -1.043
_refine_diff_density_rms         0.115
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.924
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1929
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.924
_refine_ls_R_factor_all          0.0504
_refine_ls_R_factor_gt           0.0386
_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^)+(0.0579P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0925
_refine_ls_wR_factor_ref         0.0961
_reflns_number_gt                1480
_reflns_number_total             1929
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b904253a.txt
_cod_data_source_block           LHBr
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed
to 'multi-scan' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_cell_volume        1708.7(6)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7201059