New pyridine carboxamide ligands and their complexation to copper(II). X-Ray crystal structures of mono-, di, tri- and tetranuclear copper complexes.
Jain, Sneh L.; Bhattacharyya, Pravat; Milton, Heather L.; Slawin, Alexandra M. Z.; Crayston, Joe A.; Woollins, J. Derek; Dalton transactions (Cambridge, England : 2003)  (2004) 862–871; doi:10.1039/b316519a

data_7013928
_publ_section_title
;
 New pyridine carboxamide ligands and their complexation to copper(II).
 X-Ray crystal structures of mono-, di, tri- and tetranuclear copper
 complexes.
;
_journal_issue                   6
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              862
_journal_page_last               871
_journal_paper_doi               10.1039/b316519a
_journal_year                    2004
_chemical_formula_moiety         'C19 H14 Cu N4 O2'
_chemical_formula_sum            'C19 H14 Cu N4 O2'
_chemical_formula_weight         393.88
_chemical_name_systematic
;
?
;
_space_group_IT_number           60
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.777(5)
_cell_length_b                   12.749(3)
_cell_length_c                   6.8213(17)
_cell_measurement_reflns_used    39
_cell_measurement_temperature    125(2)
_cell_measurement_theta_max      28
_cell_measurement_theta_min      12
_cell_volume                     1632.9(7)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      125(2)
_diffrn_detector_area_resol_mean 0.9
_diffrn_measured_fraction_theta_full 0.939
_diffrn_measured_fraction_theta_max 0.939
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and 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  0.0796
_diffrn_reflns_av_sigmaI/netI    0.0521
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            6185
_diffrn_reflns_theta_full        23.38
_diffrn_reflns_theta_max         23.38
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    1.360
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.709668
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            red/orange
_exptl_crystal_density_diffrn    1.602
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             804
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.310
_refine_diff_density_min         -0.551
_refine_diff_density_rms         0.067
_refine_ls_extinction_coef       0.0026(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.969
_refine_ls_hydrogen_treatment    RIDING
_refine_ls_matrix_type           full
_refine_ls_number_parameters     124
_refine_ls_number_reflns         1123
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.969
_refine_ls_R_factor_all          0.0639
_refine_ls_R_factor_gt           0.0365
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0478P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0760
_refine_ls_wR_factor_ref         0.0832
_reflns_number_gt                790
_reflns_number_total             1123
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b316519a.txt
_cod_data_source_block           4
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'MULTISCAN' changed to
'multi-scan' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_cell_volume        1633.0(7)
_cod_original_sg_symbol_H-M      Pbcn
_cod_database_code               7013928