Using Halogen···Halogen Interactions to Direct Noncentrosymmetric Crystal Packing in Dipolar Organic Molecules
Saha, Binoy K.; Nangia, Ashwini; Nicoud, Jean-François; Crystal Growth & Design 6 (2006) 1278–; doi:10.1021/cg060117k

data_4508709
_publ_section_title
;
 Using Halogen&#x00B7;&#x00B7;&#x00B7;Halogen Interactions to Direct
 Noncentrosymmetric Crystal Packing in Dipolar Organic Molecules
;
_journal_issue                   6
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1278
_journal_paper_doi               10.1021/cg060117k
_journal_volume                  6
_journal_year                    2006
_chemical_formula_moiety         'C5 H5 Cl N2'
_chemical_formula_sum            'C5 H5 Cl N2'
_chemical_formula_weight         128.56
_chemical_name_common            3-amino-2-chloropyridine
_chemical_name_systematic
; 
 3-amino-2-chloropyridine 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 104.510(11)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.446(5)
_cell_length_b                   8.022(6)
_cell_length_c                   11.991(8)
_cell_measurement_reflns_used    1929
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.12
_cell_measurement_theta_min      2.54
_cell_volume                     600.3(8)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0275
_diffrn_reflns_av_sigmaI/netI    0.0284
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_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            4239
_diffrn_reflns_theta_full        26.19
_diffrn_reflns_theta_max         26.19
_diffrn_reflns_theta_min         3.09
_exptl_absorpt_coefficient_mu    0.518
_exptl_absorpt_correction_T_max  0.9217
_exptl_absorpt_correction_T_min  0.8989
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS - Bruker Nonius area detector scaling and absorption correction - V2.10'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.423
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             264
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.404
_refine_diff_density_min         -0.211
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     81
_refine_ls_number_reflns         1186
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0571
_refine_ls_R_factor_gt           0.0429
_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^)+(0.0637P)^2^+0.1398P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1117
_refine_ls_wR_factor_ref         0.1222
_reflns_number_gt                922
_reflns_number_total             1186
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg060117ksup10.cif
_cod_data_source_block           an396_m
_cod_original_cell_volume        600.3(7)
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               4508709