Cu(ii)-induced twisting of the biphenyl core: exploring the effect of structure and coordination environment of biphenyl-based chiral copper(ii) complexes on interaction with calf-thymus DNA
Ghosh, Soumen; Khan, Mehebub Ali; Bhattacharyya, Arghyadeep; Alam, Md. Akhtarul; Zangrando, Ennio; Guchhait, Nikhil; New Journal of Chemistry 44 (2020) 20275–20284; doi:10.1039/C9NJ06184C

data_7060248
_publ_section_title
;
 Cu(ii)-induced twisting of the biphenyl core: exploring the effect of
 structure and coordination environment of biphenyl-based chiral
 copper(ii) complexes on interaction with calf-thymus DNA
;
_journal_issue                   46
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              20275
_journal_page_last               20284
_journal_paper_doi               10.1039/C9NJ06184C
_journal_volume                  44
_journal_year                    2020
_chemical_formula_moiety         'C28 H22 N4 O4'
_chemical_formula_sum            'C28 H22 N4 O4'
_chemical_formula_weight         478.49
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2020-09-30 deposited with the CCDC.	2020-10-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 92.35(5)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   16.791(4)
_cell_length_b                   14.910(4)
_cell_length_c                   20.068(7)
_cell_measurement_reflns_used    2844
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.59
_cell_measurement_theta_min      2.43
_cell_volume                     5020(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Ortep3 for Windows (Farrugia,1997)'
_computing_publication_material  'Wingx 2018.3 (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.888
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0686
_diffrn_reflns_av_unetI/netI     0.0680
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.888
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            12475
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.888
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.151
_diffrn_reflns_theta_min         1.827
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.266
_exptl_crystal_description       rod
_exptl_crystal_F_000             2000
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.156
_refine_diff_density_min         -0.165
_refine_diff_density_rms         0.040
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.976
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     337
_refine_ls_number_reflns         4950
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.976
_refine_ls_R_factor_all          0.0906
_refine_ls_R_factor_gt           0.0473
_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^)+(0.0551P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1126
_refine_ls_wR_factor_ref         0.1288
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2839
_reflns_number_total             4950
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9nj06184c2.cif
_cod_data_source_block           shelx_CCDC3
_cod_original_cell_volume        5020(2)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7060248
_shelx_shelxl_version_number     2018/3
_shelx_res_checksum              83726