Structural Studies of Supramolecular G-Quadruplexes Formed from 8-Aryl-2'-deoxyguanosine Derivatives.
García-Arriaga, Marilyn; Hobley, Gerard; Rivera, José M; The Journal of organic chemistry 81 (2016) 6026–6035; doi:10.1021/acs.joc.6b01113

data_4036978
_publ_section_title
;
 Structural Studies of Supramolecular G-Quadruplexes Formed from
 8-Aryl-2'-deoxyguanosine Derivatives.
;
_journal_issue                   14
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              6026
_journal_page_last               6035
_journal_paper_doi               10.1021/acs.joc.6b01113
_journal_volume                  81
_journal_year                    2016
_chemical_absolute_configuration rm
_chemical_formula_sum            'C18 H21 N5 O6'
_chemical_formula_weight         403.40
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                   7.4228(19)
_cell_length_b                   11.744(3)
_cell_length_c                   21.248(5)
_cell_measurement_temperature    300(2)
_cell_volume                     1852.3(8)
_computing_cell_refinement       'BRUKER SMART-NT V5.0'
_computing_data_collection       'BRUKER SMART-NT V5.0'
_computing_data_reduction        'BRUKER SAINT-NT V5/6.0'
_computing_molecular_graphics    'BRUKER SHELXTL-NT V5.1'
_computing_publication_material  'BRUKER SHELXTL-NT V5.1'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      300(2)
_diffrn_measured_fraction_theta_full 0.965
_diffrn_measured_fraction_theta_max 0.965
_diffrn_measurement_device_type  'Bruker AXS SMART CCD 1K area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0988
_diffrn_reflns_av_sigmaI/netI    0.1229
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            11604
_diffrn_reflns_theta_full        28.01
_diffrn_reflns_theta_max         28.01
_diffrn_reflns_theta_min         1.92
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.447
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'hexagonal prism'
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.210
_refine_diff_density_min         -0.207
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -4(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.163
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     277
_refine_ls_number_reflns         4207
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.163
_refine_ls_R_factor_all          0.1814
_refine_ls_R_factor_gt           0.0915
_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^)+(0.0381P)^2^+0.1518P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1220
_refine_ls_wR_factor_ref         0.1398
_reflns_number_gt                2281
_reflns_number_total             4207
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo6b01113_si_002.cif
_cod_data_source_block           jr003
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               4036978