Syntheses, crystal structures and magnetic properties of new oxalato-, croconato- and squarato-containing copper(II) complexes
José Carranza; Conor Brennan; Jorunn Sletten; Brita Vangdal; Paul Rillema; Francesc Lloret; Miguel Julve; New J. Chem. 27 (2003) 1775–1783; doi:10.1039/b301212n

data_7050558
_publ_section_title
;
 Syntheses, crystal structures and magnetic properties of new oxalato-,
 croconato- and squarato-containing copper(II) complexes
;
_journal_issue                   12
_journal_name_full               'New J. Chem.'
_journal_page_first              1775
_journal_page_last               1783
_journal_paper_doi               10.1039/b301212n
_journal_volume                  27
_journal_year                    2003
_chemical_formula_sum            'C12 H15 Cu N3 O8'
_chemical_formula_weight         392.81
_chemical_name_systematic
;
?
;
_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 if bound to C or N, difmap if bound to O'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 111.533(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.4848(4)
_cell_length_b                   21.1731(12)
_cell_length_c                   9.3035(5)
_cell_measurement_reflns_used    8132
_cell_measurement_temperature    153(2)
_cell_volume                     1554.72(14)
_computing_cell_refinement       'SAINT, version 6.02a'
_computing_data_collection       'SMART, version 5.054'
_computing_data_reduction        'SAINT, version 6.02a'
_computing_molecular_graphics    'XP, version 5.1'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  '2K SMART CCD'
_diffrn_measurement_method       'omega scan'
_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  0.0198
_diffrn_reflns_av_sigmaI/netI    0.0273
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            13985
_diffrn_reflns_theta_full        30.52
_diffrn_reflns_theta_max         30.52
_diffrn_reflns_theta_min         1.92
_diffrn_standards_decay_%        0
_diffrn_standards_number
'50 first frames remeasured at end of data collection'
_exptl_absorpt_coefficient_mu    1.453
_exptl_absorpt_correction_T_max  'see above'
_exptl_absorpt_correction_T_min  'Tmin/Tmax ratio 0.830281'
_exptl_absorpt_correction_type   'empirical, SADABS'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.678
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             804
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.395
_refine_diff_density_min         -0.549
_refine_diff_density_rms         0.128
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.144
_refine_ls_hydrogen_treatment    'riding model'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         4716
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.144
_refine_ls_R_factor_all          0.0339
_refine_ls_R_factor_gt           0.0263
_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^)+(0.0476P)^2^+0.1883P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0748
_refine_ls_wR_factor_ref         0.0845
_reflns_number_gt                4093
_reflns_number_total             4716
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b301212n.txt
_cod_data_source_block           2jc
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7050558