An alternative to ‘propylene/Leonard linker’ for studying arene interactions in flexible pyrazolo[3,4-d]pyrimidine core based models both at molecular and supramolecular levels
Avasthi, Kamlakar; Ansari, Amantullah; Kant, Ruchir; Maulik, Prakas R.; Ravikumar, Krishnan; Chattopadhyay, Partha; Adhikary, Nirmal D.; CrystEngComm 13 (2011) 2039–; doi:10.1039/c0ce00336k

data_7210465
_publ_section_title
;
 An alternative to &#x2018;propylene/Leonard linker&#x2019; for studying
 arene interactions in flexible pyrazolo[3,4-d]pyrimidine core based
 models both at molecular and supramolecular levels
;
_journal_issue                   6
_journal_name_full               CrystEngComm
_journal_page_first              2039
_journal_paper_doi               10.1039/c0ce00336k
_journal_volume                  13
_journal_year                    2011
_chemical_formula_moiety         'C18 H20 N8 S4'
_chemical_formula_sum            'C18 H20 N8 S4'
_chemical_formula_weight         476.66
_chemical_melting_point          184
_chemical_name_common
;1,3-Bis(2,6-dimethyl sulfanyl-9H-purin-9-yl)-2-methylenyl
propane
;
_chemical_name_systematic
;
1,3-Bis(2,6-dimethyl sulfanyl-9H-purin-9-yl)-2-methylenyl propane
;
_space_group_IT_number           60
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_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                   16.357(3)
_cell_length_b                   10.062(2)
_cell_length_c                   13.506(3)
_cell_measurement_reflns_used    9605
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.69
_cell_measurement_theta_min      2.38
_cell_volume                     2222.9(8)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  'SHELXTL (Bruker, 1997)'
_computing_structure_refinement  'SHELXTL (Bruker, 1997)'
_computing_structure_solution    'SHELXTL (Bruker, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_device_type  'CCD Area Detector'
_diffrn_measurement_method       '\w scan'
_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  0.0220
_diffrn_reflns_av_sigmaI/netI    0.0122
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            23923
_diffrn_reflns_theta_full        28.02
_diffrn_reflns_theta_max         28.02
_diffrn_reflns_theta_min         2.38
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.451
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.424
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rectangular block'
_exptl_crystal_F_000             992
_exptl_crystal_size_max          .300
_exptl_crystal_size_mid          .175
_exptl_crystal_size_min          .125
_refine_diff_density_max         0.297
_refine_diff_density_min         -0.175
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     139
_refine_ls_number_reflns         2669
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0426
_refine_ls_R_factor_gt           0.0371
_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^)+(0.0624P)^2^+0.3220P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1023
_refine_ls_wR_factor_ref         0.1066
_reflns_number_gt                2309
_reflns_number_total             2669
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0ce00336k.txt
_cod_data_source_block           9a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        2223.0(8)
_cod_original_sg_symbol_H-M      Pbcn
_cod_database_code               7210465