Anion hydrogen bond effects in the formation of planar or quintuple helical coordination polymers.
Byrne, Peter; Lloyd, Gareth O; Anderson, Kirsty M; Clarke, Nigel; Steed, Jonathan W; Chemical communications (Cambridge, England)  (2008) 3720–3722; doi:10.1039/b806060f

data_7103291
_publ_section_title
;
 Anion hydrogen bond effects in the formation of planar or quintuple
 helical coordination polymers.
;
_journal_issue                   32
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              3720
_journal_page_last               3722
_journal_paper_doi               10.1039/b806060f
_journal_year                    2008
_chemical_formula_sum            'C19 H26 Ag B F4 N6 O3'
_chemical_formula_weight         581.14
_chemical_name_common            'AgBF4 Helix'
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 96.132(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.4790(17)
_cell_length_b                   7.3940(8)
_cell_length_c                   21.154(2)
_cell_measurement_temperature    100(2)
_cell_volume                     2407.2(4)
_computing_cell_refinement       'SMART V5.625 (Bruker, 2001)'
_computing_data_collection       'SMART V5.625 (Bruker, 2001)'
_computing_data_reduction        'SAINT+ NT V6.22 (Bruker, 2001)'
_computing_molecular_graphics    'XSeed interface to POVRay'
_computing_publication_material  'CIFTAB (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'SMART 1000'
_diffrn_measurement_method       \w
_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  0.0601
_diffrn_reflns_av_sigmaI/netI    0.0540
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            22311
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.55
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.901
_exptl_absorpt_correction_T_max  0.8919
_exptl_absorpt_correction_T_min  0.8196
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.604
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1176
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.13
_refine_diff_density_max         1.996
_refine_diff_density_min         -4.332
_refine_diff_density_rms         0.203
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.220
_refine_ls_hydrogen_treatment    geom
_refine_ls_matrix_type           full
_refine_ls_number_parameters     351
_refine_ls_number_reflns         4204
_refine_ls_number_restraints     72
_refine_ls_restrained_S_all      1.213
_refine_ls_R_factor_all          0.1339
_refine_ls_R_factor_gt           0.1264
_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^)+(0.0000P)^2^+96.3287P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2940
_refine_ls_wR_factor_ref         0.2973
_reflns_number_gt                3735
_reflns_number_total             4204
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b806060f.txt
_cod_data_source_block           BF4.CIF
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7103291