Photodimerization of an olefin-containing pyridinium-based metal‒organic complex and isomerization of its cyclobutane product upon recrystallization
Cai, Li-Xuan; Chen, Cheng; Zhang, Ya-Jun; Yang, Xiao-Dong; Zhang, Jie; CrystEngComm 18 (2016) 7347–; doi:10.1039/C6CE00724D

data_7225593
_publ_section_title
;
 Photodimerization of an olefin-containing pyridinium-based metal--organic
 complex and isomerization of its cyclobutane product upon
 recrystallization
;
_journal_issue                   38
_journal_name_full               CrystEngComm
_journal_page_first              7347
_journal_paper_doi               10.1039/C6CE00724D
_journal_volume                  18
_journal_year                    2016
_chemical_formula_sum            'C20 H16 Cd Cl2 N2 O2'
_chemical_formula_weight         499.65
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-06-22 deposited with the CCDC.
2016-06-22 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 125.270(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   27.982(8)
_cell_length_b                   12.703(4)
_cell_length_c                   16.341(5)
_cell_measurement_reflns_used    6687
_cell_measurement_temperature    293
_cell_measurement_theta_max      27.5087
_cell_measurement_theta_min      2.0307
_cell_volume                     4742(3)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293
_diffrn_measured_fraction_theta_full 0.968
_diffrn_measured_fraction_theta_max 0.968
_diffrn_measurement_device_type  'Saturn724+ (2x2 bin mode)'
_diffrn_measurement_method       CCD_Profile_fitting
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0885
_diffrn_reflns_av_sigmaI/netI    0.0959
_diffrn_reflns_limit_h_max       35
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            18295
_diffrn_reflns_theta_full        27.39
_diffrn_reflns_theta_max         27.39
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    1.161
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8153
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.400
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       sheet
_exptl_crystal_F_000             1984
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.616
_refine_diff_density_min         -0.517
_refine_diff_density_rms         0.105
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.959
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     244
_refine_ls_number_reflns         5206
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.959
_refine_ls_R_factor_all          0.0626
_refine_ls_R_factor_gt           0.0466
_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^)+(0.0673P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1352
_refine_ls_wR_factor_ref         0.1426
_reflns_number_gt                3286
_reflns_number_total             5206
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ce00724d2.cif
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_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 7225592--7225593.cif.
;
_cod_original_cell_volume        4742(2)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7225593