Synthon preference in O-protonated amide crystals – dominance of short strong hydrogen bonds
Perumalla, Sathyanarayana Reddy; Sun, Changquan Calvin; CrystEngComm 15 (2013) 8941–; doi:10.1039/c3ce41271g

data_7211133
_publ_section_title
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 Synthon preference in O-protonated amide crystals -- dominance of short
 strong hydrogen bonds
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_journal_issue                   44
_journal_name_full               CrystEngComm
_journal_page_first              8941
_journal_paper_doi               10.1039/c3ce41271g
_journal_volume                  15
_journal_year                    2013
_chemical_formula_sum            'C7 H8 Cl N O6'
_chemical_formula_weight         237.59
_chemical_name_common            'Salicylamide HClO4 salt'
_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                 106.8520(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   18.6631(17)
_cell_length_b                   5.1858(5)
_cell_length_c                   20.1660(18)
_cell_measurement_reflns_used    3231
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.44
_cell_measurement_theta_min      2.28
_cell_volume                     1867.9(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker Apex2'
_computing_data_reduction        'Bruker SAINT'
_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      173(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker Apex II platform CCD'
_diffrn_measurement_method       'Omega and Phi 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  0.0279
_diffrn_reflns_av_sigmaI/netI    0.0252
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            8748
_diffrn_reflns_theta_full        27.44
_diffrn_reflns_theta_max         27.44
_diffrn_reflns_theta_min         2.11
_exptl_absorpt_coefficient_mu    0.419
_exptl_absorpt_correction_T_max  0.9284
_exptl_absorpt_correction_T_min  0.8846
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (G. Sheldrick, 2003)'
_exptl_crystal_density_diffrn    1.690
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             976
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.302
_refine_diff_density_min         -0.436
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     168
_refine_ls_number_reflns         2123
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0477
_refine_ls_R_factor_gt           0.0338
_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^)+(0.0407P)^2^+1.8027P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0819
_refine_ls_wR_factor_ref         0.0882
_reflns_number_gt                1715
_reflns_number_total             2123
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce41271g.txt
_cod_data_source_block           12027_0m
_cod_depositor_comments
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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 2.4.2 from
2011-04-26.

'_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
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_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7211133