Bifurcated hydrogen-bonded synthons in molecular complexes of picolines with chloranilic acid
Adam, Martin S.; Parkin, Andrew; Thomas, Lynne H.; Wilson, Chick C.; CrystEngComm 12 (2010) 917–; doi:10.1039/b912539f

data_7211679
_publ_section_title
;
 Bifurcated hydrogen-bonded synthons in molecular complexes of picolines
 with chloranilic acid
;
_journal_issue                   3
_journal_name_full               CrystEngComm
_journal_page_first              917
_journal_paper_doi               10.1039/b912539f
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         '(C6 Cl2 O4), 2(C6 N1 H8)'
_chemical_formula_sum            'C18 H16 Cl2 N2 O4'
_chemical_formula_weight         395.24
_chemical_name_common            'bis (4-picoline) chloranilate'
_chemical_name_systematic        'bis (4-picoline) chloranilate'
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_cell_angle_alpha                90
_cell_angle_beta                 96.56(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.037(5)
_cell_length_b                   6.099(3)
_cell_length_c                   17.679(8)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    200
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     860.9(8)
_computing_cell_refinement       'CrystalClear 1.4.0 (Rigaku, 2008)'
_computing_data_collection       'CrystalClear 1.4.0 (Rigaku, 2008)'
_computing_data_reduction        'CrystalClear 1.4.0 (Rigaku, 2008)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'WINGX (Farrugia, 1999)'
_computing_structure_refinement  'WINGX (Farrugia, 1999)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      200
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type
;
'Rigaku R-AXIS RAPID IP Image Plate diffractometer'
;
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0613
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            8229
_diffrn_reflns_theta_full        25.816
_diffrn_reflns_theta_max         27.464
_diffrn_reflns_theta_min         3.246
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.405
_exptl_absorpt_correction_T_max  0.9222
_exptl_absorpt_correction_T_min  0.9222
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            'dark red'
_exptl_crystal_density_diffrn    1.525
_exptl_crystal_description       block
_exptl_crystal_F_000             408
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.247
_refine_diff_density_min         -0.275
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     150
_refine_ls_number_reflns         1916
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0758
_refine_ls_R_factor_gt           0.0437
_refine_ls_shift/su_max          0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0328P)^2^+0.4476P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0539
_refine_ls_wR_factor_ref         0.0539
_reflns_limit_h_max              10
_reflns_limit_h_min              -10
_reflns_limit_k_max              7
_reflns_limit_k_min              0
_reflns_limit_l_max              22
_reflns_limit_l_min              0
_reflns_number_gt                1315
_reflns_number_total             1916
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            b912539f.txt
_cod_data_source_block           4pic_2_1_200K
_cod_depositor_comments
;
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.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        861.0(7)
_cod_original_sg_symbol_H-M      'P 1 21/c 1 '
_cod_database_code               7211679