Solid-state photochemistry of cis-cinnamic acids: a competition between [2 + 2] addition and cis–trans isomerization
Veerakanellore, Giri Babu; Captain, Burjor; Ramamurthy, V.; CrystEngComm 18 (2016) 4708–; doi:10.1039/C6CE00682E

data_7225199
_publ_section_title
;
 Solid-state photochemistry of cis-cinnamic acids: a competition between
 [2 + 2] addition and cis--trans isomerization
;
_journal_issue                   25
_journal_name_full               CrystEngComm
_journal_page_first              4708
_journal_paper_doi               10.1039/C6CE00682E
_journal_volume                  18
_journal_year                    2016
_chemical_formula_sum            'C12 H12 O3'
_chemical_formula_weight         204.22
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2016-03-10 deposited with the CCDC.
2016-05-11 downloaded from the CCDC.
;
_cell_angle_alpha                71.8220(10)
_cell_angle_beta                 84.9210(10)
_cell_angle_gamma                64.4150(10)
_cell_formula_units_Z            2
_cell_length_a                   7.7380(6)
_cell_length_b                   8.1099(6)
_cell_length_c                   10.0048(8)
_cell_measurement_reflns_used    2286
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.90
_cell_measurement_theta_min      2.92
_cell_volume                     537.24(7)
_computing_cell_refinement       'SAINT+  V8.34A (Bruker, 2015)'
_computing_data_collection       'APEX2 v2.2-0 (Bruker, 2007)'
_computing_data_reduction        'SAINT+  V8.34A (Bruker, 2015)'
_computing_molecular_graphics    'XSHELL v6.3.1 (Bruker, 2004)'
_computing_publication_material  'XCIF v2014/2 (Bruker, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS/SHELXTL V6.14 (Bruker, 2015)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEX2 CCD diffractometer'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0190
_diffrn_reflns_av_unetI/netI     0.0163
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_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       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            5904
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        24.999
_diffrn_reflns_theta_max         24.999
_diffrn_reflns_theta_min         2.146
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6867
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS 2014/5 Bruker)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.262
_exptl_crystal_description       plate
_exptl_crystal_F_000             216
_exptl_crystal_size_max          0.500
_exptl_crystal_size_mid          0.320
_exptl_crystal_size_min          0.060
_refine_diff_density_max         0.369
_refine_diff_density_min         -0.293
_refine_diff_density_rms         0.050
_refine_ls_extinction_coef       0.072(15)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     138
_refine_ls_number_reflns         1889
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0719
_refine_ls_R_factor_gt           0.0617
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0857P)^2^+0.1812P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1697
_refine_ls_wR_factor_ref         0.1813
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1521
_reflns_number_total             1889
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6ce00682e2.cif
_cod_data_source_block           collect_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' 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.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 7225194--7225202.cif.
;
_cod_database_code               7225199
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.956
_shelx_estimated_absorpt_t_max   0.995
_shelx_res_checksum              23204