Solid state photodimerization of trans-2-(4-pyridyl)-4-vinylbenzoic acid via salt formation and isomerisation of cyclobutane compounds in solution
Kole, Goutam Kumar; Tan, Geok Kheng; Vittal, Jagadese J.; CrystEngComm 14 (2012) 7438–; doi:10.1039/c2ce26086g

data_7214814
_publ_section_title
;
 Solid state photodimerization of trans-2-(4-pyridyl)-4-vinylbenzoic acid
 via salt formation and isomerisation of cyclobutane compounds in solution
;
_journal_issue                   21
_journal_name_full               CrystEngComm
_journal_page_first              7438
_journal_paper_doi               10.1039/c2ce26086g
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C15 H16 Cl N O7'
_chemical_formula_weight         357.74
_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
_cell_angle_alpha                93.248(2)
_cell_angle_beta                 101.615(2)
_cell_angle_gamma                107.129(2)
_cell_formula_units_Z            2
_cell_length_a                   8.6037(11)
_cell_length_b                   9.5432(12)
_cell_length_c                   10.2702(13)
_cell_measurement_reflns_used    3468
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      26.08
_cell_measurement_theta_min      2.54
_cell_volume                     783.27(17)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0357
_diffrn_reflns_av_sigmaI/netI    0.0360
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            10107
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    0.283
_exptl_absorpt_correction_T_max  0.9100
_exptl_absorpt_correction_T_min  0.8715
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick 2001)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.517
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             372
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.34
_refine_diff_density_max         0.764
_refine_diff_density_min         -0.729
_refine_diff_density_rms         0.087
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.221
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     347
_refine_ls_number_reflns         3589
_refine_ls_number_restraints     496
_refine_ls_restrained_S_all      1.279
_refine_ls_R_factor_all          0.0893
_refine_ls_R_factor_gt           0.0784
_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^)+(0.1051P)^2^+0.5929P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2203
_refine_ls_wR_factor_ref         0.2274
_reflns_number_gt                3008
_reflns_number_total             3589
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce26086g.txt
_cod_data_source_block           a449jj
_cod_depositor_comments
;
The following automatic conversions were performed:

'_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 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7214814