Effect of metal coordination on the interaction of substituted phenanthroline and pyridine ligands with quadruplex DNA
Reed, Julie E.; White, Andrew J. P.; Neidle, Stephen; Vilar, Ramón; Dalton Transactions  (2009) 2558–2568; doi:10.1039/b820086f

data_7000865
_publ_section_title
;
 Effect of metal coordination on the interaction of substituted
 phenanthroline and pyridine ligands with quadruplex DNA
;
_journal_issue                   14
_journal_name_full               'Dalton Transactions'
_journal_page_first              2558
_journal_page_last               2568
_journal_paper_doi               10.1039/b820086f
_journal_year                    2009
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C23 H23 N3 O4, H2 O'
_chemical_formula_sum            'C23 H25 N3 O5'
_chemical_formula_weight         423.46
_space_group_IT_number           92
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4abw 2nw'
_symmetry_space_group_name_H-M   'P 41 21 2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.24730(10)
_cell_length_b                   9.24730(10)
_cell_length_c                   23.1554(9)
_cell_measurement_reflns_used    7845
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1980.08(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0494
_diffrn_reflns_av_sigmaI/netI    0.0882
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            4477
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         3.24
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_T_max  1.06279
_exptl_absorpt_correction_T_min  0.88228
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sortav
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.420
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.234
_refine_diff_density_min         -0.176
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.1(15)
_refine_ls_extinction_coef       0.016(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     155
_refine_ls_number_reflns         2256
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0648
_refine_ls_R_factor_gt           0.0483
_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^)+(0.0285P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1019
_refine_ls_wR_factor_ref         0.1086
_reflns_number_gt                1801
_reflns_number_total             2256
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b820086f.txt
_cod_data_source_block           Compound_L7
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
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      P4(1)2(1)2
_cod_database_code               7000865