A Crab Claw Shaped Molecular Receptor for Selective Recognition of Picric Acid: Supramolecular Self-Assembly Mediated Aggregation Induced Emission and Color Change
Pitchaimani, J.; Kundu, Anu; Karthikeyan, Subramanian; Anthony, Philip Philip; Moon, Dohyun; Madhu, Vedichi; CrystEngComm  (2017) –; doi:10.1039/C7CE00642J

data_7228356
_publ_section_title
;
 A Crab Claw Shaped Molecular Receptor for Selective Recognition of Picric
 Acid: Supramolecular Self-Assembly Mediated Aggregation Induced Emission
 and Color Change
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/C7CE00642J
_journal_year                    2017
_chemical_formula_moiety         'C29 H27 N7 O2'
_chemical_formula_sum            'C29 H27 N7 O2'
_chemical_formula_weight         505.57
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2017-02-25 deposited with the CCDC.
2017-06-01 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 101.561(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.307(2)
_cell_length_b                   21.037(2)
_cell_length_c                   13.607(2)
_cell_measurement_reflns_used    80292
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      33.679
_cell_measurement_theta_min      0.349
_cell_volume                     2610.1(7)
_computing_cell_refinement       '<i>HKL3000sm</i>(Otwinowski & Minor, 1997)'
_computing_data_collection
'<i>PAL BL2D-SMDC Program</i>(Shin et. al, 2016)'
_computing_data_reduction        '<i>HKL3000sm</i>(Otwinowski & Minor, 1997)'
_computing_molecular_graphics    '<i>DIAMOND 4</i>(Putz & Brandenburg, 2014)'
_computing_publication_material  '<i>enCifer 1.5.1</i>'
_computing_structure_refinement  '<i>SHELXL-2016</i> (Sheldrick, 2015)'
_computing_structure_solution    '<i>SHELXT-2014</i> (Sheldrick, 2015)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'ADSC Q210 CCD area detector'
_diffrn_measurement_method       'omega scan'
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.610
_diffrn_reflns_av_R_equivalents  0.0240
_diffrn_reflns_av_unetI/netI     0.0379
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            14320
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        21.469
_diffrn_reflns_theta_max         25.000
_diffrn_reflns_theta_min         1.552
_diffrn_source                   'PLSII 2D bending magnet'
_exptl_absorpt_coefficient_mu    0.062
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.860
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
'<i>HKL3000sm Scalepack(Otwinowski & Minor, 1997)</i>'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.287
_exptl_crystal_description       block
_exptl_crystal_F_000             1064
_exptl_crystal_size_max          0.325
_exptl_crystal_size_mid          0.311
_exptl_crystal_size_min          0.295
_refine_diff_density_max         0.379
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.047
_refine_ls_extinction_coef       0.038(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/6 (Sheldrick 2016)'
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     348
_refine_ls_number_reflns         7258
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.0594
_refine_ls_R_factor_gt           0.0420
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0760P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1120
_refine_ls_wR_factor_ref         0.1193
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5316
_reflns_number_total             7258
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ce00642j2.cif
_cod_data_source_block           SPA157
_cod_database_code               7228356
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.980
_shelx_estimated_absorpt_t_max   0.982
_shelx_res_checksum              33659