Packing of Planar Organic Molecules: Interplay of van der Waals and Electrostatic Interaction
Käfer, Daniel; El Helou, Mira; Gemel, Christian; Witte, Gregor; Crystal Growth & Design 8 (2008) 3053–; doi:10.1021/cg800195u

data_4503641
_publ_section_title
;
 Packing of Planar Organic Molecules: Interplay of van der Waals and
 Electrostatic Interaction
;
_journal_issue                   8
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3053
_journal_paper_doi               10.1021/cg800195u
_journal_volume                  8
_journal_year                    2008
_chemical_formula_sum            'C22 H10 O4'
_chemical_formula_weight         338.30
_space_group_IT_number           2
_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                98.666(10)
_cell_angle_beta                 93.323(11)
_cell_angle_gamma                98.592(12)
_cell_formula_units_Z            1
_cell_length_a                   4.6889(8)
_cell_length_b                   7.3537(10)
_cell_length_c                   11.0965(13)
_cell_measurement_temperature    113(2)
_cell_volume                     372.73(9)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_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  0.0308
_diffrn_reflns_av_sigmaI/netI    0.0747
_diffrn_reflns_limit_h_max       3
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            3808
_diffrn_reflns_theta_full        27.61
_diffrn_reflns_theta_max         27.61
_diffrn_reflns_theta_min         2.84
_exptl_absorpt_coefficient_mu    0.104
_exptl_crystal_density_diffrn    1.507
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             174
_refine_diff_density_max         0.285
_refine_diff_density_min         -0.241
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.792
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     118
_refine_ls_number_reflns         1704
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.792
_refine_ls_R_factor_all          0.0824
_refine_ls_R_factor_gt           0.0391
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0508P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0909
_refine_ls_wR_factor_ref         0.0963
_reflns_number_gt                832
_reflns_number_total             1704
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg800195u-file001.cif
_cod_data_source_block           witte
_cod_database_code               4503641