Remarkable Steric Effects and Influence of Monodentate Axial Ligands L on the Spin-Crossover Properties of trans-[FeII(N4ligand)L] Complexes
José Sánchez Costa; Kristian Lappalainen; Graham de Ruiter; Manuel Quesada; Jinkui Tang; Ilpo Mutikainen; Urho Turpeinen; C. Matthias Grunert; Philipp Gütlich; Hanane Zhor Lazar; Jean-François Létard; Patrick Gamez; Jan Reedijk; Inorganic Chemistry 46 (2007) 4079–4089; doi:10.1021/ic0624017

data_4307885
_publ_section_title
;
Remarkable Steric Effects and Influence of Monodentate Axial Ligands L on
the Spin-Crossover Properties of trans-[FeII(N4ligand)L] Complexes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4079
_journal_page_last               4089
_journal_paper_doi               10.1021/ic0624017
_journal_volume                  46
_journal_year                    2007
_chemical_formula_sum            'C26 H24 Fe N12'
_chemical_formula_weight         560.42
_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                 106.87(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.522(4)
_cell_length_b                   14.136(3)
_cell_length_c                   9.2130(18)
_cell_measurement_reflns_used    20716
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.53
_cell_measurement_theta_min      3.114
_cell_volume                     2557.7(10)
_computing_cell_refinement       'COLLECT (Nonius, 2002)'
_computing_data_collection       'COLLECT (Nonius, 2002)'
_computing_data_reduction        'COLLECT (Nonius, 2002)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1990)'
_computing_publication_material  'SHELXTL (Sheldrick, 1990)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_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  0.0421
_diffrn_reflns_av_sigmaI/netI    0.0264
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            20716
_diffrn_reflns_theta_full        27.53
_diffrn_reflns_theta_max         27.53
_diffrn_reflns_theta_min         3.14
_exptl_absorpt_coefficient_mu    0.632
_exptl_absorpt_correction_T_max  0.9937
_exptl_absorpt_correction_T_min  0.8331
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.455
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1160
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.589
_refine_diff_density_min         -0.541
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.742
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     177
_refine_ls_number_reflns         2936
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.742
_refine_ls_R_factor_all          0.0467
_refine_ls_R_factor_gt           0.0350
_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^)+(0.0676P)^2^+11.7595P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0920
_refine_ls_wR_factor_ref         0.1025
_reflns_number_gt                2455
_reflns_number_total             2936
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0624017-file005.cif
_cod_data_source_block           kpl53
_cod_original_cell_volume        2557.7(9)
_cod_database_code               4307885