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_7211138
_publ_section_title
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 Synthon preference in O-protonated amide crystals -- dominance of short
 strong hydrogen bonds
;
_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            'C20 H33 Br2 N2 O7'
_chemical_formula_weight         573.30
_chemical_name_common            'Phenacetin hydrobromide trihydrate'
_chemical_name_systematic
; 
 ? 
;
_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                76.208(2)
_cell_angle_beta                 77.572(2)
_cell_angle_gamma                87.122(2)
_cell_formula_units_Z            2
_cell_length_a                   6.8379(8)
_cell_length_b                   13.7200(16)
_cell_length_c                   14.2131(17)
_cell_measurement_reflns_used    3985
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      27.40
_cell_measurement_theta_min      2.39
_cell_volume                     1264.6(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      123(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_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  0.0329
_diffrn_reflns_av_sigmaI/netI    0.0364
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            13797
_diffrn_reflns_theta_full        26.71
_diffrn_reflns_theta_max         26.71
_diffrn_reflns_theta_min         2.39
_exptl_absorpt_coefficient_mu    3.245
_exptl_absorpt_correction_T_max  0.6418
_exptl_absorpt_correction_T_min  0.5354
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (G. Sheldrick, 2003)'
_exptl_crystal_density_diffrn    1.506
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             586
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.711
_refine_diff_density_min         -0.779
_refine_diff_density_rms         0.092
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     308
_refine_ls_number_reflns         5297
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0417
_refine_ls_R_factor_gt           0.0331
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0606P)^2^+0.3442P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0921
_refine_ls_wR_factor_ref         0.0969
_reflns_number_gt                4457
_reflns_number_total             5297
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce41271g.txt
_cod_data_source_block           11291_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7211138