Polymorphism and solid-to-solid phase transitions of a simple organic molecule, 3-chloroisonicotinic acid
Long, Sihui; Zhou, Panpan; Parkin, Sean; Li, Tonglei; CrystEngComm 17 (2015) 2389–; doi:10.1039/C4CE02563F

data_7219515
_publ_section_title
;
 Polymorphism and solid-to-solid phase transitions of a simple organic
 molecule, 3-chloroisonicotinic acid
;
_journal_issue                   11
_journal_name_full               CrystEngComm
_journal_page_first              2389
_journal_paper_doi               10.1039/C4CE02563F
_journal_volume                  17
_journal_year                    2015
_chemical_formula_moiety         'C6 H4 Cl N O2'
_chemical_formula_sum            'C6 H4 Cl N O2'
_chemical_formula_weight         157.55
_chemical_name_systematic
; 
3-Chloroisonicotinic acid 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_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
_audit_update_record
;
2015-01-03 deposited with the CCDC.
2015-02-06 downloaded from the CCDC.
;
_cell_angle_alpha                63.2313(14)
_cell_angle_beta                 69.7053(14)
_cell_angle_gamma                64.9840(15)
_cell_formula_units_Z            2
_cell_length_a                   7.1603(2)
_cell_length_b                   7.2376(2)
_cell_length_c                   7.4950(3)
_cell_measurement_reflns_used    1391
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     308.331(18)
_computing_cell_refinement       'SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2002)'
_computing_data_reduction        'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP in SHELXTL/PC (Sheldrick, 1995)'
_computing_publication_material
;
SHELXL97 and local procedures
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      90(2)
_diffrn_detector_area_resol_mean 18
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius KappaCCD diffractometer'
_diffrn_measurement_method       '\w scans at fixed \c = 55\%'
_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  0.0383
_diffrn_reflns_av_sigmaI/netI    0.0435
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            2782
_diffrn_reflns_theta_full        27.43
_diffrn_reflns_theta_max         27.43
_diffrn_reflns_theta_min         3.10
_exptl_absorpt_coefficient_mu    0.541
_exptl_absorpt_correction_T_max  0.9580
_exptl_absorpt_correction_T_min  0.7372
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.697
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             160
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.408
_refine_diff_density_min         -0.355
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     92
_refine_ls_number_reflns         1406
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0359
_refine_ls_R_factor_gt           0.0313
_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^)+(0.0371P)^2^+0.1858P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0815
_refine_ls_wR_factor_ref         0.0848
_reflns_number_gt                1263
_reflns_number_total             1406
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c4ce02563f2.cif
_cod_data_source_block           added_by_encifer
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

 Adding full bibliography for 7219515--7219517.cif.
;
_cod_original_cell_volume        308.331(17)
_cod_database_code               7219515