On the CN<sup>-</sup>K coordination modes in K<sub>n</sub>[M<sup>6-n</sup>(CN)<sub>6</sub>]·xH<sub>2</sub>O: first evidence of CN<sup>-</sup>K electron-deficient bonding.
Avila, Manuel; Torres, Lucero; Montero-Alejo, Ana L; Reguera, Leslie; Reguera, Edilso; Dalton transactions (Cambridge, England : 2003) 50 (2021) 2510–2520; doi:10.1039/d0dt04019c

data_7706416
_publ_section_title
;
 On the CN<sup>-</sup>K coordination modes in
 K<sub>n</sub>[M<sup>6-n</sup>(CN)<sub>6</sub>]&#x00B7;xH<sub>2</sub>O:
 first evidence of CN<sup>-</sup>K electron-deficient bonding.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2510
_journal_page_last               2520
_journal_paper_doi               10.1039/d0dt04019c
_journal_volume                  50
_journal_year                    2021
_chemical_formula_moiety         'C6 H6 Fe K4 N6 O3'
_chemical_formula_sum            'C6 H6 Fe K4 N6 O3'
_chemical_formula_weight         422.42
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2019-07-01T15:53:55-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2019-07-01 deposited with the CCDC.	2021-01-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90.0100(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.3940(4)
_cell_length_b                   16.8754(8)
_cell_length_c                   9.3975(4)
_cell_measurement_reflns_used    9862
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      26.39
_cell_measurement_theta_min      3.24
_cell_volume                     1489.76(11)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0418
_diffrn_reflns_av_unetI/netI     0.0192
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            25859
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.371
_diffrn_reflns_theta_min         3.245
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.142
_exptl_absorpt_correction_T_max  0.827
_exptl_absorpt_correction_T_min  0.598
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'numerical from crystal shape'
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.883
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.268
_exptl_crystal_size_mid          0.167
_exptl_crystal_size_min          0.092
_refine_diff_density_max         0.711
_refine_diff_density_min         -0.403
_refine_diff_density_rms         0.108
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.115
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     98
_refine_ls_number_reflns         1097
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.115
_refine_ls_R_factor_all          0.0475
_refine_ls_R_factor_gt           0.039
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0896P)^2^+0.5254P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1168
_refine_ls_wR_factor_ref         0.1226
_reflns_Friedel_coverage         0
_reflns_number_gt                966
_reflns_number_total             1524
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0dt04019c2.cif
_cod_data_source_block           k4[fe(cn)6]3h2o
_cod_depositor_comments
'Adding full bibliography for 7706413--7706419.cif.'
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7706416
_shelx_shelxl_version_number     2018/3