Coordination bonds and strong hydrogen bonds giving a framework material based on a 4- and 8-connected net in [Ca[Co(en)(oxalato)<small><sub>2</sub></small>]<small><sub>2</sub></small>]<small><sub><i>n</i></sub></small>
Cédric Borel; Mikael Håkansson; Lars Öhrström; CrystEngComm 8 (2006) 666–; doi:10.1039/b605762d

data_7203434
_publ_section_title
;
 Coordination bonds and strong hydrogen bonds giving a framework
 material based on a 4- and 8-connected net in
 [Ca[Co(en)(oxalato)<small><sub>2</sub></small>]<small><sub>2</sub></small>]<small><sub><i>n</i></sub></small>
;
_journal_issue                   9
_journal_name_full               CrystEngComm
_journal_page_first              666
_journal_paper_doi               10.1039/b605762d
_journal_volume                  8
_journal_year                    2006
_chemical_formula_sum            'C12 H16 Ca Co2 N4 O16'
_chemical_formula_weight         630.23
_chemical_name_systematic
;
?
;
_space_group_IT_number           81
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P -4'
_symmetry_space_group_name_H-M   'P -4'
_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            1
_cell_length_a                   8.898(3)
_cell_length_b                   8.898(3)
_cell_length_c                   7.679(3)
_cell_measurement_reflns_used    3741
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      3.50
_cell_volume                     608.0(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.974
_diffrn_measured_fraction_theta_max 0.974
_diffrn_measurement_device_type  'R-Axis IIc'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0451
_diffrn_reflns_av_sigmaI/netI    0.0355
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            3741
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         25.0
_diffrn_reflns_theta_min         3.50
_exptl_absorpt_coefficient_mu    1.654
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.98
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   REQAB
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.721
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             318
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.488
_refine_diff_density_min         -0.883
_refine_diff_density_rms         0.123
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.01(6)
_refine_ls_extinction_coef       0.24(4)
_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   1.114
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     82
_refine_ls_number_reflns         1053
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.114
_refine_ls_R_factor_all          0.0716
_refine_ls_R_factor_gt           0.0685
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1199P)^2^+0.8724P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1780
_refine_ls_wR_factor_ref         0.1823
_reflns_number_gt                991
_reflns_number_total             1053
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b605762d.txt
_cod_data_source_block           coenox3
_cod_original_cell_volume        608.0(3)
_cod_original_sg_symbol_H-M      P-4
_cod_database_code               7203434