Low barrier hydrogen bonds in sterically modified Schiff bases
Filarowski, Aleksander; Koll, Aleksander; Glowiak, Tadeusz; Journal of the Chemical Society, Perkin Transactions 2  (2002) 835–; doi:10.1039/b106145n

data_7204213
_publ_section_title
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 Low barrier hydrogen bonds in sterically modified Schiff bases
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_journal_issue                   4
_journal_name_full
'Journal of the Chemical Society, Perkin Transactions 2'
_journal_page_first              835
_journal_paper_doi               10.1039/b106145n
_journal_year                    2002
_chemical_formula_sum            'C11 H14 Cl N O'
_chemical_formula_weight         211.68
_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                79.12(3)
_cell_angle_beta                 83.75(3)
_cell_angle_gamma                76.06(3)
_cell_formula_units_Z            2
_cell_length_a                   6.9530(10)
_cell_length_b                   7.594(2)
_cell_length_c                   11.013(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.3
_cell_measurement_theta_min      13.4
_cell_volume                     553.0(2)
_computing_cell_refinement       'Kuma KM4 software 1987'
_computing_data_collection       'Kuma KM4 software 1987'
_computing_data_reduction        'Kuma KM4 software 1987'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.931
_diffrn_measured_fraction_theta_max 0.931
_diffrn_measurement_device       'Kuma KM4 automatic diffractometer'
_diffrn_measurement_method       'profile data from omega/2theta scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54180
_diffrn_reflns_av_R_equivalents  0.0394
_diffrn_reflns_av_sigmaI/netI    0.0416
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            4528
_diffrn_reflns_theta_full        80.94
_diffrn_reflns_theta_max         80.94
_diffrn_reflns_theta_min         4.10
_exptl_absorpt_coefficient_mu    2.790
_exptl_crystal_density_diffrn    1.271
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             224
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.456
_refine_diff_density_min         -0.320
_refine_diff_density_rms         0.057
_refine_ls_extinction_coef       0.079(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     184
_refine_ls_number_reflns         2266
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0553
_refine_ls_R_factor_gt           0.0498
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0871P)^2^+0.0331P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1276
_refine_ls_wR_factor_ref         0.1328
_reflns_number_gt                1942
_reflns_number_total             2266
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b106145n.txt
_cod_data_source_block           tium12
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0871P)^2^+0.0331P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0871P)^2^+0.0331P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_original_cell_volume        553.00(19)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7204213