Design, synthesis and DNA-cleaving efficiency of photoswitchable dimeric azobenzene-based C2-symmetric enediynes.
Basak, Amit; Mitra, Debarati; Kar, Moumita; Biradha, Kumar; Chemical communications (Cambridge, England)  (2008) 3067–3069; doi:10.1039/b801644e

data_7103192
_publ_section_title
;
 Design, synthesis and DNA-cleaving efficiency of photoswitchable
 dimeric azobenzene-based C2-symmetric enediynes.
;
_journal_issue                   26
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              3067
_journal_page_last               3069
_journal_paper_doi               10.1039/b801644e
_journal_year                    2008
_chemical_absolute_configuration syn
_chemical_formula_sum            'C40 H44 N4 O8'
_chemical_formula_weight         708.79
_space_group_IT_number           1
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                80.108(6)
_cell_angle_beta                 81.866(6)
_cell_angle_gamma                65.132(5)
_cell_formula_units_Z            2
_cell_length_a                   9.0546(18)
_cell_length_b                   10.325(2)
_cell_length_c                   22.378(5)
_cell_measurement_temperature    296(2)
_cell_volume                     1864.3(6)
_computing_cell_refinement       'BRUKER AXS SMART'
_computing_data_collection       'BRUKER AXS SMART'
_computing_data_reduction        'BRUKER AXS SMART'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker-APEX-2 CCD AREA DETECTOR'
_diffrn_measurement_method       hemisphere
_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  0.0301
_diffrn_reflns_av_sigmaI/netI    0.0428
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            23961
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         0.93
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9912
_exptl_absorpt_correction_T_min  0.9868
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            Orange
_exptl_crystal_density_diffrn    1.263
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Platelet
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.310
_refine_diff_density_min         -0.232
_refine_diff_density_rms         0.078
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.978
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     937
_refine_ls_number_reflns         11454
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      0.978
_refine_ls_R_factor_all          0.0943
_refine_ls_R_factor_gt           0.0558
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0993P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1425
_refine_ls_wR_factor_ref         0.1661
_reflns_number_gt                7218
_reflns_number_total             11454
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b801644e.txt
_cod_data_source_block           kk1
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P1
_cod_database_code               7103192