Contrasting Crystallographic Signatures of 9-Carboxypropyl Adeninium Cation: Adenine Dimerization vs Carboxylic Group Interaction
Kumar, Jitendra; Awasthi, Shubhra; Verma, Sandeep; Crystal Growth & Design 10 (2010) 3555–; doi:10.1021/cg100470u

data_4501791
_publ_section_title
;
 Contrasting Crystallographic Signatures of 9-Carboxypropyl Adeninium
 Cation: Adenine Dimerization vs Carboxylic Group Interaction
;
_journal_issue                   8
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3555
_journal_paper_doi               10.1021/cg100470u
_journal_volume                  10
_journal_year                    2010
_chemical_formula_moiety         'C8 H10 N5 O2, Cl O4, 2(H2 O)'
_chemical_formula_sum            'C8 H14 Cl N5 O8'
_chemical_formula_weight         343.69
_chemical_name_common            '3-(N9-adeninyl)propanoic acid.HClO4'
_chemical_name_systematic
;
 6-amino-9-(2-carboxyethyl)-9H-purin-1-ium perchlorate
;
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 99.565(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.3540(17)
_cell_length_b                   14.328(3)
_cell_length_c                   11.878(2)
_cell_measurement_reflns_used    3442
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.36
_cell_measurement_theta_min      2.25
_cell_volume                     1402.0(5)
_computing_cell_refinement       'SMART 5.628 (Bruker, 2003)'
_computing_data_collection       'SMART 5.628 (Bruker, 2003)'
_computing_data_reduction        'SAINT+ 6.45  (Bruker, 2003)'
_computing_molecular_graphics    'diamond 3.1d'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    Sir92
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'CCD area Detector'
_diffrn_measurement_method       'Phi-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  0.0512
_diffrn_reflns_av_sigmaI/netI    0.0573
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            8935
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.36
_diffrn_reflns_theta_min         2.25
_exptl_absorpt_coefficient_mu    0.324
_exptl_absorpt_correction_T_max  0.9380
_exptl_absorpt_correction_T_min  0.9380
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North et al., 1968)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.628
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.527
_refine_diff_density_min         -0.791
_refine_diff_density_rms         0.135
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.156
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         3442
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.155
_refine_ls_R_factor_all          0.0833
_refine_ls_R_factor_gt           0.0553
_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^)+(0.0894P)^2^+1.9683P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1348
_refine_ls_wR_factor_ref         0.1973
_reflns_number_gt                2556
_reflns_number_total             3442
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg100470u_si_002.cif
_cod_data_source_block           adduct4
_cod_database_code               4501791