Acid directed in situ oxidation and decarboxylation of 4,4',6,6'- tetra-methyl-2,2'-bipyridine: Synthesis and structural characterisation of 4,4',6-tri-carboxy-2,2'-bipyridine and its copper(II) coordination polymer
Niamh R. Kelly; Sandrine Goetz; Chris S. Hawes; Paul E. Kruger; Inorganica Chimica Acta 403 (2013) 102–109; doi:

data_1517610
_publ_section_title
;
 Acid directed in situ oxidation and decarboxylation of 4,4',6,6'-
 tetra-methyl-2,2'-bipyridine: Synthesis and structural characterisation
 of 4,4',6-tri-carboxy-2,2'-bipyridine and its copper(II) coordination
 polymer
;
_journal_name_full
;
Inorganica Chimica Acta
;
_journal_page_first              102
_journal_page_last               109
_journal_volume                  403
_journal_year                    2013
_chemical_formula_moiety         'C13 H9 N2 O6, N O3, H2 O'
_chemical_formula_sum            'C13 H11 N3 O10'
_chemical_formula_weight         369.25
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 95.672(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.0411(7)
_cell_length_b                   25.0890(19)
_cell_length_c                   6.5439(5)
_cell_measurement_temperature    153(2)
_cell_volume                     1477.1(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement  'SHELXTL version 5.1 (Sheldrick, 1998)'
_computing_structure_solution    'SHELXTL version 5.1 (Sheldrick, 1998)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEX CCD'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0522
_diffrn_reflns_av_unetI/netI     0.0434
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            11608
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.62
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.146
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.660
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.632
_refine_diff_density_min         -0.501
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.214
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         2592
_refine_ls_number_restraints     11
_refine_ls_restrained_S_all      1.212
_refine_ls_R_factor_all          0.0962
_refine_ls_R_factor_gt           0.0762
_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^)+(0.0482P)^2^+2.8284P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1488
_refine_ls_wR_factor_ref         0.1568
_reflns_number_gt                2143
_reflns_number_total             2592
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ICA-2013-403-102-109-2.cif
_cod_data_source_block           2
_cod_database_code               1517610