Self-assembly of seven diamide-containing pyridinium salts via nonconventional C–H⋯O hydrogen bonding catemers
Wu, An-Kai; Lee, Kwang-Ming; CrystEngComm 14 (2012) 3424–; doi:10.1039/c2ce06448k

data_7207761
_publ_section_title
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 Self-assembly of seven diamide-containing pyridinium salts via
 nonconventional C--H&#x22EF;O hydrogen bonding catemers
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_journal_issue                   10
_journal_name_full               CrystEngComm
_journal_page_first              3424
_journal_paper_doi               10.1039/c2ce06448k
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C8 H10 Cl N3 O2'
_chemical_formula_weight         215.64
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                80.447(2)
_cell_angle_beta                 84.791(2)
_cell_angle_gamma                72.016(2)
_cell_formula_units_Z            2
_cell_length_a                   5.3951(4)
_cell_length_b                   8.1557(7)
_cell_length_c                   11.4412(9)
_cell_measurement_reflns_used    5634
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      2.5
_cell_volume                     471.77(7)
_computing_cell_refinement       'SAINT V7.34A (Bruker AXS, 2006)'
_computing_data_collection       'APEX2 (Bruker AXS, 2010)'
_computing_data_reduction        'SAINT V7.34A (Bruker AXS, 2006)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_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  0.0140
_diffrn_reflns_av_sigmaI/netI    0.0122
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            7449
_diffrn_reflns_theta_full        26.53
_diffrn_reflns_theta_max         26.53
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    0.382
_exptl_absorpt_correction_T_max  0.9486
_exptl_absorpt_correction_T_min  0.8501
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2008/1 (Bruker AXS)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.518
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Lump
_exptl_crystal_F_000             224
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.399
_refine_diff_density_min         -0.353
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.068
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     127
_refine_ls_number_reflns         1933
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0268
_refine_ls_R_factor_gt           0.0258
_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^)+(0.0301P)^2^+0.2938P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0679
_refine_ls_wR_factor_ref         0.0687
_reflns_number_gt                1850
_reflns_number_total             1933
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce06448k.txt
_cod_data_source_block           838304
_cod_depositor_comments
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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 
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_cod_database_code               7207761