Molecular packing, crystal to crystal transformation, electron transfer behaviour, photochromic and fluorescent property of three hydrogen-bonded supramolecular complexes containing benzenecarboxylate donors and viologen acceptors
Chen, Hengjun; Li, Min; Zheng, Guiming; Wang, Yifang; Song, Yang; Han, Conghui; Fu, Zhiyong; Liao, Shijun; Dai, Jing-Cao; RSC Adv.  (2014) –; doi:10.1039/C4RA07471H

data_7217849
_publ_section_title
;
 Molecular packing, crystal to crystal transformation, electron transfer
 behaviour, photochromic and fluorescent property of three hydrogen-bonded
 supramolecular complexes containing benzenecarboxylate donors and
 viologen acceptors
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C4RA07471H
_journal_year                    2014
_chemical_formula_sum            'C27 H18 N2 O10'
_chemical_formula_weight         530.43
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 110.25(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   26.032(7)
_cell_length_b                   8.8150(15)
_cell_length_c                   21.444(8)
_cell_measurement_reflns_used    3936
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      25.03
_cell_measurement_theta_min      2.99
_cell_volume                     4617(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.963
_diffrn_measured_fraction_theta_max 0.963
_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  0.0331
_diffrn_reflns_av_sigmaI/netI    0.0267
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            16709
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.99
_exptl_absorpt_coefficient_mu    0.119
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.526
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2192
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.710
_refine_diff_density_min         -0.314
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     368
_refine_ls_number_reflns         3936
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0606
_refine_ls_R_factor_gt           0.0426
_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^)+(0.0753P)^2^+1.1972P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1139
_refine_ls_wR_factor_ref         0.1275
_reflns_number_gt                2922
_reflns_number_total             3936
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ra07471h2.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 'None' changed to
'none' 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 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7217849