Structural diversity and spectral and thermal properties of the first alkaline earth metal tetracyanidoborates: [Mg(H2O)6][B(CN)4]2, [Mg(H2O)2][B(CN)4]2, [Mg(DMF)6][B(CN)4]2, [Ca(H2O)3][B(CN)4]2, and [Ca(H2O)2(CH3CN)][B(CN)4]2.
Nitschke, Christian; Köckerling, Martin; Bernhardt, Eduard; Küppers, Torsten; Willner, Helge; Dalton transactions (Cambridge, England : 2003) 43 (2014) 7128–7138; doi:10.1039/c3dt51945g

data_7029831
_publ_section_title
;
 Structural diversity and spectral and thermal properties of the first
 alkaline earth metal tetracyanidoborates: [Mg(H2O)6][B(CN)4]2,
 [Mg(H2O)2][B(CN)4]2, [Mg(DMF)6][B(CN)4]2, [Ca(H2O)3][B(CN)4]2, and
 [Ca(H2O)2(CH3CN)][B(CN)4]2.
;
_journal_issue                   19
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7128
_journal_page_last               7138
_journal_paper_doi               10.1039/c3dt51945g
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety         '(Ca 2+) (C4 B N4 1-)2 3(H2 O)'
_chemical_formula_sum            'C8 H6 B2 Ca N8 O3'
_chemical_formula_weight         323.91
_chemical_name_systematic
;
Calcium tris-aqua bis-tetracyanoborate
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'ct.exe (M. K\"ockerling, 1996)'
_cell_angle_alpha                68.283(1)
_cell_angle_beta                 89.223(1)
_cell_angle_gamma                63.152(1)
_cell_formula_units_Z            2
_cell_length_a                   9.5347(2)
_cell_length_b                   10.2205(2)
_cell_length_c                   10.4874(2)
_cell_measurement_reflns_used    9962
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      42.81
_cell_measurement_theta_min      2.5
_cell_volume                     832.45(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      173(2)
_diffrn_measured_fraction_theta_full 0.937
_diffrn_measured_fraction_theta_max 0.937
_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  0.0212
_diffrn_reflns_av_sigmaI/netI    0.0180
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            44979
_diffrn_reflns_theta_full        42.81
_diffrn_reflns_theta_max         42.81
_diffrn_reflns_theta_min         3.52
_exptl_absorpt_coefficient_mu    0.397
_exptl_absorpt_correction_T_max  0.9651
_exptl_absorpt_correction_T_min  0.9072
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker-Nonius SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.292
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             328
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.686
_refine_diff_density_min         -0.220
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     223
_refine_ls_number_reflns         11424
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0335
_refine_ls_R_factor_gt           0.0279
_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^)+(0.0403P)^2^+0.0935P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0763
_refine_ls_wR_factor_ref         0.0785
_reflns_number_gt                10189
_reflns_number_total             11424
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt51945g1.cif
_cod_data_source_block           Ca_BCN_H2O
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for
 ./tmp-cod-update-bibliographies-12899/cifs/7029831.cif.
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7029831