Expanding the pH Range of Metal–Nucleobase Complexes for Acid–Base Chemistry: Properties of Bis(guanine) Complexes of (bpy)Pt^II^ with Either Two Major or Major and Minor Tautomers Bonded Simultaneously
Brandi-Blanco, Pilar; Sanz Miguel, Pablo J.; Müller, Barbara; Gil Bardají, Elisa; Willermann, Michael; Lippert, Bernhard; Inorganic chemistry 48 (2009) 5208–5215; doi:10.1021/ic900176c

data_4338550
_publ_section_title
;
 Expanding the pH Range of Metal--Nucleobase Complexes for Acid--Base
 Chemistry: Properties of Bis(guanine) Complexes of (bpy)Pt^II^ with
 Either Two Major or Major and Minor Tautomers Bonded Simultaneously
;
_journal_coden_ASTM              INOCAJ
_journal_issue                   12
_journal_name_full               'Inorganic chemistry'
_journal_page_first              5208
_journal_page_last               5215
_journal_paper_doi               10.1021/ic900176c
_journal_volume                  48
_journal_year                    2009
_chemical_formula_moiety         'C22 H22 N12 O2 Pt, 2(N O3), H2 O'
_chemical_formula_sum            'C22 H24 N14 O9 Pt'
_chemical_formula_weight         823.64
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2008-12-09T13:07:38-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 100.314(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   15.2631(4)
_cell_length_b                   12.0657(4)
_cell_length_c                   15.5578(5)
_cell_measurement_reflns_used    4751
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      27.4987
_cell_measurement_theta_min      2.6549
_cell_volume                     2818.83(15)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.967
_diffrn_measured_fraction_theta_max 0.967
_diffrn_measurement_device_type  'Sapphire2-CCD, Oxford Diffraction'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0638
_diffrn_reflns_av_unetI/netI     0.1235
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19830
_diffrn_reflns_theta_full        27.6
_diffrn_reflns_theta_max         27.6
_diffrn_reflns_theta_min         3.2
_exptl_absorpt_coefficient_mu    5.057
_exptl_absorpt_correction_T_max  0.573
_exptl_absorpt_correction_T_min  0.376
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.941
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prisms
_exptl_crystal_F_000             1616
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.11
_refine_diff_density_max         1.701
_refine_diff_density_min         -1.344
_refine_diff_density_rms         0.143
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     415
_refine_ls_number_reflns         6336
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.0923
_refine_ls_R_factor_gt           0.0426
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0102P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0572
_refine_ls_wR_factor_ref         0.0606
_reflns_number_gt                3558
_reflns_number_total             6336
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic900176c_si_001.cif
_cod_data_source_block           2
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4338550