Exchange-coupled high-spin, low-spin and spin-crossover dicobalt(ii) complexes of a pyridazine-containing Schiff-base macrocycle: control of cobalt(ii) spin state by choice of axial ligands
Brooker, Sally; de Geest, Duncan J.; Kelly, Robert J.; Plieger, Paul G.; Moubaraki, Boujemaa; Murray, Keith S.; Jameson, Geoffrey B.; Journal of the Chemical Society, Dalton Transactions  (2002) 2080–; doi:10.1039/b111267h

data_7011401
_publ_section_title
;
 Exchange-coupled high-spin, low-spin and spin-crossover dicobalt(ii)
 complexes of a pyridazine-containing Schiff-base macrocycle: control
 of cobalt(ii) spin state by choice of axial ligands
;
_journal_issue                   9
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              2080
_journal_paper_doi               10.1039/b111267h
_journal_year                    2002
_chemical_formula_sum            'C21 H20 Cl Co2 N11 O7'
_chemical_formula_weight         691.79
_space_group_IT_number           12
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_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                 98.84(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.225(2)
_cell_length_b                   22.337(5)
_cell_length_c                   11.066(2)
_cell_measurement_temperature    158(2)
_cell_volume                     2497.4(9)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      158(2)
_diffrn_measured_fraction_theta_full 0.604
_diffrn_measured_fraction_theta_max 0.604
_diffrn_measurement_device_type  'Bruker SMART area detector'
_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  0.0779
_diffrn_reflns_av_sigmaI/netI    0.0519
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -3
_diffrn_reflns_number            1880
_diffrn_reflns_theta_full        26.55
_diffrn_reflns_theta_max         26.55
_diffrn_reflns_theta_min         3.09
_exptl_absorpt_coefficient_mu    1.505
_exptl_absorpt_correction_type   Semi-empirical(SADABS)
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.840
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1400
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.932
_refine_diff_density_min         -1.191
_refine_diff_density_rms         0.181
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.128
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     195
_refine_ls_number_reflns         1619
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.128
_refine_ls_R_factor_all          0.1545
_refine_ls_R_factor_gt           0.1474
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0918P)^2^+156.2998P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3281
_refine_ls_wR_factor_ref         0.3329
_reflns_number_gt                1469
_reflns_number_total             1619
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b111267h.txt
_cod_data_source_block           c2uponm
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_sg_symbol_H-M      C2/m
_cod_database_code               7011401