Supramolecular Structures and Tautomerism of Carboxylate Salts of Adenine and Pharmaceutically RelevantN6-Substituted Adenine
McHugh, Charlene; Erxleben, Andrea; Crystal Growth & Design 11 (2011) 5096–; doi:10.1021/cg201007m

data_4501283
_publ_section_title
;
 Supramolecular Structures and Tautomerism of Carboxylate Salts of Adenine
 and Pharmaceutically RelevantN6-Substituted Adenine
;
_journal_issue                   11
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              5096
_journal_paper_doi               10.1021/cg201007m
_journal_volume                  11
_journal_year                    2011
_chemical_formula_sum            'C16 H15 N5 O4'
_chemical_formula_weight         341.33
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.613(12)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.0215(11)
_cell_length_b                   5.1904(5)
_cell_length_c                   33.712(3)
_cell_measurement_reflns_used    5369
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.02
_cell_measurement_theta_min      3.61
_cell_volume                     1571.0(3)
_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
;
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 16.1048
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type
'Goniometer KM4/Xcalibur, detector: Sapphire3'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0406
_diffrn_reflns_av_sigmaI/netI    0.0899
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            5369
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         3.61
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_T_max  0.9894
_exptl_absorpt_correction_T_min  0.9686
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.439
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.222
_refine_diff_density_min         -0.219
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.142
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     274
_refine_ls_number_reflns         2772
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.142
_refine_ls_R_factor_all          0.1237
_refine_ls_R_factor_gt           0.0742
_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^)+(0.0372P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1288
_refine_ls_wR_factor_ref         0.1519
_reflns_number_gt                1718
_reflns_number_total             2772
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg201007m_si_002.cif
_cod_data_source_block           1
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4501283