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_4318357
_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 Cu F8 N12'
_chemical_formula_weight         833.95
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.094(7)
_cell_angle_beta                 104.930(6)
_cell_angle_gamma                116.508(6)
_cell_formula_units_Z            2
_cell_length_a                   10.282(4)
_cell_length_b                   11.326(4)
_cell_length_c                   18.788(7)
_cell_measurement_reflns_used    5040
_cell_measurement_temperature    125(2)
_cell_measurement_theta_max      25.033
_cell_measurement_theta_min      2.260
_cell_volume                     1874.5(12)
_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      125(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0465
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            16929
_diffrn_reflns_theta_full        25.14
_diffrn_reflns_theta_max         25.14
_diffrn_reflns_theta_min         1.13
_diffrn_standards_decay_%        none
_exptl_absorpt_coefficient_mu    0.665
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.477
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             862
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.916
_refine_diff_density_min         -0.735
_refine_diff_density_rms         0.116
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     520
_refine_ls_number_reflns         16929
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.0726
_refine_ls_R_factor_gt           0.0658
_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^)+(0.1175P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1670
_refine_ls_wR_factor_ref         0.1709
_reflns_number_gt                13953
_reflns_number_total             16929
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0112645_6.cif
_cod_data_source_block           cu125k
_cod_original_cell_volume        1874.6(12)
_cod_database_code               4318357