Polymorphism of an Organic System Effected by the Directionality of Hydrogen-Bonding Chains
Long, Sihui; Parkin, Sean; Siegler, Maxime; Brock, Carolyn P.; Cammers, Arthur; Li, Tonglei; Crystal Growth & Design 8 (2008) 3137–; doi:10.1021/cg800339h

data_4503732
_publ_section_title
;
 Polymorphism of an Organic System Effected by the Directionality of
 Hydrogen-Bonding Chains
;
_journal_issue                   9
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3137
_journal_paper_doi               10.1021/cg800339h
_journal_volume                  8
_journal_year                    2008
_chemical_formula_moiety         'C13 H12 N2 O2'
_chemical_formula_sum            'C13 H12 N2 O2'
_chemical_formula_weight         228.25
_chemical_name_systematic
; 
2-[methyl(phenyl)amino]nicotinic acid  
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 90.113(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            20
_cell_length_a                   8.6871(7)
_cell_length_b                   44.926(4)
_cell_length_c                   14.2383(12)
_cell_measurement_reflns_used    9546
_cell_measurement_temperature    90.0(2)
_cell_measurement_theta_max      67.29
_cell_measurement_theta_min      5.18
_cell_volume                     5556.9(8)
_computing_cell_refinement       'APEX2 (Bruker-AXS, 2006)'
_computing_data_collection       'APEX2 (Bruker-AXS, 2006)'
_computing_data_reduction        'APEX2 (Bruker-AXS, 2006)'
_computing_molecular_graphics    'XP in SHELXTL (Sheldrick, 1994)'
_computing_publication_material
; 
SHELX97-2 (Sheldrick, 1997) and local procedures 
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      90.0(2)
_diffrn_detector_area_resol_mean 18
_diffrn_measured_fraction_theta_full 0.948
_diffrn_measured_fraction_theta_max 0.948
_diffrn_measurement_device_type  'Bruker X8 Proteum diffractometer'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'graded multilayer optics'
_diffrn_radiation_source         'fine-focus rotating anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0605
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       53
_diffrn_reflns_limit_k_min       -53
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            39746
_diffrn_reflns_theta_full        67.86
_diffrn_reflns_theta_max         67.86
_diffrn_reflns_theta_min         3.68
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.767
_exptl_absorpt_correction_T_max  0.963
_exptl_absorpt_correction_T_min  0.775
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs in APEX2 (BrukerAXS, 2006)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.364
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2400
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.395
_refine_diff_density_min         -0.388
_refine_diff_density_rms         0.084
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.13(11)
_refine_ls_extinction_coef       0.00082(5)
_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   1.071
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1553
_refine_ls_number_reflns         39746
_refine_ls_number_restraints     3289
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0519
_refine_ls_R_factor_gt           0.0488
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1113P)^2^+0.8242P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1594
_refine_ls_wR_factor_ref         0.1620
_reflns_number_gt                36925
_reflns_number_total             39746
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            cg800339h-file005.cif
_cod_data_source_block           IV
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4503732