Solid-State Structural and Magnetic Investigations of {M[HC(3,5-Me2pz)3]2}(BF4)2 (M = Fe, Co, Ni, Cu): Observation of a Thermally Induced Solid-State Phase Change Controlling an Iron(II) Spin-State Crossover
Daniel L. Reger; Christine A. Little; Mark D. Smith; Gary J. Long; Inorganic Chemistry 41 (2002) 4453–4460; doi:10.1021/ic0112645

data_4318352
_publ_section_title
;
 Solid-State Structural and Magnetic Investigations of
 {M[HC(3,5-Me2pz)3]2}(BF4)2 (M = Fe, Co, Ni, Cu): Observation of a
 Thermally Induced Solid-State Phase Change Controlling an Iron(II)
 Spin-State Crossover
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4453
_journal_page_last               4460
_journal_paper_doi               10.1021/ic0112645
_journal_volume                  41
_journal_year                    2002
_chemical_formula_sum            'C32 H44 B2 Co F8 N12'
_chemical_formula_weight         829.34
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_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_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 111.4640(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.3012(12)
_cell_length_b                   10.3039(6)
_cell_length_c                   19.6375(12)
_cell_measurement_reflns_used    6065
_cell_measurement_temperature    220(2)
_cell_measurement_theta_max      26.371
_cell_measurement_theta_min      2.229
_cell_volume                     3822.9(4)
_computing_cell_refinement       'SAINT+ NT V6.02a (Bruker, 1998)'
_computing_data_collection       'SMART NT V5.619 (Bruker, 2000)'
_computing_data_reduction        'SAINT+ NT V6.02a'
_computing_molecular_graphics    'SHELXTL V5.1 (Sheldrick, 1997)'
_computing_publication_material  'SHELXTL V5.1'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      220(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0499
_diffrn_reflns_av_sigmaI/netI    0.0508
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            16977
_diffrn_reflns_theta_full        26.41
_diffrn_reflns_theta_max         26.41
_diffrn_reflns_theta_min         2.16
_diffrn_standards_decay_%        none
_exptl_absorpt_coefficient_mu    0.530
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.441
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       bar
_exptl_crystal_F_000             1716
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.300
_refine_diff_density_min         -0.187
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.957
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     260
_refine_ls_number_reflns         3918
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.957
_refine_ls_R_factor_all          0.0623
_refine_ls_R_factor_gt           0.0437
_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^)+(0.0575P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1036
_refine_ls_wR_factor_ref         0.1107
_reflns_number_gt                2874
_reflns_number_total             3918
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0112645_1.cif
_cod_data_source_block           co220k
_cod_database_code               4318352