Fluorobenzonitriles: Influence of the Substitution Pattern on Melting and Crystallization Properties
Vasylyeva, Vera; Merz, Klaus; Crystal Growth & Design 10 (2010) 4250–; doi:10.1021/cg100794s

data_4501980
_publ_section_title
;
 Fluorobenzonitriles: Influence of the Substitution Pattern on Melting and
 Crystallization Properties
;
_journal_issue                   10
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              4250
_journal_paper_doi               10.1021/cg100794s
_journal_volume                  10
_journal_year                    2010
_chemical_formula_sum            'C28 H12 F4 N4'
_chemical_formula_weight         480.42
_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                 115.11(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            1
_cell_length_a                   7.1005(14)
_cell_length_b                   13.201(3)
_cell_length_c                   7.0522(14)
_cell_measurement_temperature    213(2)
_cell_volume                     598.6(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.787
_diffrn_measured_fraction_theta_max 0.787
_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  0.1113
_diffrn_reflns_av_sigmaI/netI    0.0640
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            762
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         3.09
_exptl_absorpt_coefficient_mu    0.103
_exptl_absorpt_correction_T_max  0.9898
_exptl_absorpt_correction_T_min  0.9699
_exptl_absorpt_correction_type   empirical
_exptl_crystal_density_diffrn    1.333
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             244
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.325
_refine_diff_density_min         -0.238
_refine_diff_density_rms         0.080
_refine_ls_extinction_coef       0.08(2)
_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   1.266
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     49
_refine_ls_number_reflns         413
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.266
_refine_ls_R_factor_all          0.1021
_refine_ls_R_factor_gt           0.0895
_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^)+(0.0904P)^2^+1.1815P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2397
_refine_ls_wR_factor_ref         0.2470
_reflns_number_gt                337
_reflns_number_total             413
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg100794s_si_003.cif
_cod_data_source_block           080416
_cod_original_cell_volume        598.6(2)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4501980