Folded conformations due to arene interactions in dissymmetric and symmetric butylidene-linker models based on pyrazolo[3,4-<i>d</i>]pyrimidine, purine and 7-deazapurine
Avasthi, Kamlakar; Shukla, Lakshmi; Kant, Ruchir; Ravikumar, Krishnan; Acta Crystallographica Section C 70 (2014) 555–561; doi:10.1107/S2053229614009449

data_2019547
_publ_section_title
;
 Folded conformations due to arene interactions in dissymmetric and
 symmetric butylidene-linker models based on
 pyrazolo[3,4-<i>d</i>]pyrimidine, purine and 7-deazapurine
;
_journal_coeditor_code           EG3154
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              555
_journal_page_last               561
_journal_paper_doi               10.1107/S2053229614009449
_journal_volume                  70
_journal_year                    2014
_chemical_formula_iupac          'C20 H22 N6 O2 S2'
_chemical_formula_moiety         'C20 H22 N6 O2 S2'
_chemical_formula_sum            'C20 H22 N6 O2 S2'
_chemical_formula_weight         442.56
_chemical_name_systematic
7,7'-(2-Methylidenepropane-1,3-diyl)bis[3-methyl-2-methylsulfanyl-3<i>H</i>-pyrrolo[2,3-<i>d</i>]pyrimidin-4(7<i>H</i>)-one]
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   9.859(2)
_cell_length_b                   13.979(4)
_cell_length_c                   29.331(8)
_cell_measurement_reflns_used    5170
_cell_measurement_temperature    100
_cell_measurement_theta_max      25.4
_cell_measurement_theta_min      3.1
_cell_volume                     4042.4(18)
_computing_cell_refinement       '<i>CrystalClear-SM Expert</i> (Rigaku, 2012)'
_computing_data_collection       '<i>CrystalClear-SM Expert</i> (Rigaku, 2012)'
_computing_data_reduction        '<i>CrystalClear-SM Expert</i> (Rigaku, 2012)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'PLATON (Spek, 2009)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       'AFC12 (Right): Kappa three-circle'
_diffrn_measurement_device_type  'Rigaku Saturn724+'
_diffrn_measurement_method       'profile data from \w scans'
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0482
_diffrn_reflns_av_sigmaI/netI    0.0302
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            29394
_diffrn_reflns_theta_full        25.36
_diffrn_reflns_theta_max         25.36
_diffrn_reflns_theta_min         3.23
_exptl_absorpt_coefficient_mu    0.295
_exptl_absorpt_correction_T_max  0.9711
_exptl_absorpt_correction_T_min  0.9064
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(REQAB; Rigaku, 1998)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.454
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1856
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.257
_refine_diff_density_min         -0.264
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.109
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     273
_refine_ls_number_reflns         3679
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.109
_refine_ls_R_factor_all          0.0442
_refine_ls_R_factor_gt           0.0410
_refine_ls_shift/su_max          0.001
_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^+3.1679P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0933
_refine_ls_wR_factor_ref         0.0953
_reflns_number_gt                3477
_reflns_number_total             3679
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            eg3154sup1.cif
_cod_data_source_block           XIV
_cod_depositor_comments
'Adding full bibliography for 2019546--2019548.cif.'
_cod_database_code               2019547
_cod_database_fobs_code          2019547