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_7210464
_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          156
_chemical_name_common
;
1,3-Bis(4,6-dimethyl sulfanyl-1H-pyrazolo(3,4-d) pyrimidin-1-
yl)-2-methylenyl propane
;
_chemical_name_systematic
;
1,3-Bis(4,6-dimethyl sulfanyl-1H-pyrazolo[3,4-d]
pyrimidin-1-yl)-2-methylenyl propane
;
_space_group_IT_number           2
_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                102.828(5)
_cell_angle_beta                 102.183(5)
_cell_angle_gamma                107.820(5)
_cell_formula_units_Z            2
_cell_length_a                   9.122(5)
_cell_length_b                   9.560(5)
_cell_length_c                   14.181(5)
_cell_measurement_reflns_used    6794
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      27.97
_cell_measurement_theta_min      2.35
_cell_volume                     1094.9(9)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL/PC (Sheldrick, 1990)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.908
_diffrn_measured_fraction_theta_max 0.908
_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     0.71069
_diffrn_reflns_av_R_equivalents  0.0161
_diffrn_reflns_av_sigmaI/netI    0.0170
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            9810
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.54
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.457
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.446
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rectangular block'
_exptl_crystal_F_000             496
_exptl_crystal_size_max          0.275
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.407
_refine_diff_density_min         -0.336
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     275
_refine_ls_number_reflns         3490
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0397
_refine_ls_R_factor_gt           0.0369
_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^)+(0.0545P)^2^+0.3903P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0990
_refine_ls_wR_factor_ref         0.1017
_reflns_number_gt                3197
_reflns_number_total             3490
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0ce00336k.txt
_cod_data_source_block           7a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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_sg_symbol_H-M      P-1
_cod_database_code               7210464