Supramolecular architectures assembled by the interaction of purine nucleobases with metal-oxalato frameworks. Non-covalent stabilization of the 7H-adenine tautomer in the solid-state.
García-Terán, Juan P; Castillo, Oscar; Luque, Antonio; García-Couceiro, Urko; Beobide, Garikoitz; Román, Pascual; Dalton transactions (Cambridge, England : 2003)  (2006) 902–911; doi:10.1039/b510018f

data_7006398
_publ_section_title
;
 Supramolecular architectures assembled by the interaction of purine
 nucleobases with metal-oxalato frameworks. Non-covalent stabilization
 of the 7H-adenine tautomer in the solid-state.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              902
_journal_page_last               911
_journal_paper_doi               10.1039/b510018f
_journal_year                    2006
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C7 H6 Mn1 N4 O5'
_chemical_formula_structural     'C7 H6 Mn1 N4 O5'
_chemical_formula_sum            'C7 H6 Mn N4 O5'
_chemical_formula_weight         281.10
_chemical_name_common            catena-(aqua(mu-oxalato)(purine)manganese(ii))
_chemical_name_systematic
;
catena-[aqua(mu-oxalato)(purine)manganese(II)]
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 105.09(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.913(1)
_cell_length_b                   16.283(3)
_cell_length_c                   8.594(2)
_cell_measurement_reflns_used    7058
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.09
_cell_measurement_theta_min      3.30
_cell_volume                     934.0(3)
_computing_cell_refinement       'CrysAlis CCD (Oxford Diffraction, 2003)'
_computing_data_collection       'CrysAlis CCD (Oxford Diffraction, 2003)'
_computing_data_reduction        'CrysAlis RED (Oxford Diffraction, 2003)'
_computing_molecular_graphics    'Ortep-3 (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'Sir92 (Altamore et al., 1993)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  Xcalibur
_diffrn_measurement_method       \w
_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  0.0345
_diffrn_reflns_av_sigmaI/netI    0.0774
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            7058
_diffrn_reflns_theta_full        28.09
_diffrn_reflns_theta_max         28.09
_diffrn_reflns_theta_min         3.30
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.433
_exptl_absorpt_correction_T_max  0.921
_exptl_absorpt_correction_T_min  0.802
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.170.32 (release 06.06.2003 CrysAlis170 VC++)
(compiled Jun 6 2003,13:53:32)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.999
_exptl_crystal_density_meas      1.99(1)
_exptl_crystal_density_method    flotation
_exptl_crystal_description       polyhedric
_exptl_crystal_F_000             564
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.421
_refine_diff_density_min         -0.268
_refine_diff_density_rms         0.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         2272
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.0634
_refine_ls_R_factor_gt           0.0317
_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^)+(0.0196P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0511
_refine_ls_wR_factor_ref         0.0555
_reflns_number_gt                1409
_reflns_number_total             2272
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b510018f.txt
_cod_data_source_block           compound1
_cod_original_sg_symbol_H-M      'P 21/a'
_cod_database_code               7006398