Structural?magnetic correlations on the first dinuclear spin crossover d4 system
Andrés E. Goeta; Judith A. K. Howard; Andrew K. Hughes; Dermot O'Hare; Royston C. B. Copley; Journal of Materials Chemistry 17 (2007) 485–; doi:10.1039/b612121g

data_7202500
_publ_section_title
;
 Structural?magnetic correlations on the first dinuclear spin crossover
 d4 system
;
_journal_issue                   5
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              485
_journal_paper_doi               10.1039/b612121g
_journal_volume                  17
_journal_year                    2007
_chemical_formula_sum            'C20 H30 Cr2 F6 P5 Sb'
_chemical_formula_weight         765.04
_chemical_name_systematic
;
\m~2~-\h^5^,\h^5^-cyclopentaphosphole)-bis
((\h^5^-pentamethyl-cyclopentadienyl)-chromium)
hexafluoroantimonate
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-I 2ya'
_symmetry_space_group_name_H-M   'I 1 2/a 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.000
_cell_angle_beta                 101.04(2)
_cell_angle_gamma                90.000
_cell_formula_units_Z            16
_cell_length_a                   22.845(8)
_cell_length_b                   21.263(7)
_cell_length_c                   22.907(8)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    25(1)
_cell_measurement_theta_max      15.36
_cell_measurement_theta_min      12.15
_cell_volume                     10921(7)
_computing_cell_refinement       'MAD (Allibon, 1996)'
_computing_data_collection       'MAD (Allibon, 1996)'
_computing_data_reduction        'COLL5N (Lehmann & Wilson, 1987)'
_computing_molecular_graphics    'SHELXTL V6.12(Bruker, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      25(1)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Fddd 4-circle diffractometer'
_diffrn_measurement_method       '\w 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  0.0282
_diffrn_reflns_av_sigmaI/netI    0.0178
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -1
_diffrn_reflns_number            12278
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.15
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 146
_diffrn_standards_number         4
_exptl_absorpt_coefficient_mu    2.108
_exptl_absorpt_correction_T_max  0.539
_exptl_absorpt_correction_T_min  0.385
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'XPREP in SHELXTL'
_exptl_crystal_colour            'dark green'
_exptl_crystal_density_diffrn    1.861
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       'irregular prism'
_exptl_crystal_F_000             6048
_exptl_crystal_size_max          0.54
_exptl_crystal_size_mid          0.48
_exptl_crystal_size_min          0.34
_refine_diff_density_max         1.710
_refine_diff_density_min         -1.590
_refine_diff_density_rms         0.245
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     614
_refine_ls_number_reflns         9623
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0431
_refine_ls_R_factor_gt           0.0424
_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^)+(0.0772P)^2^+77.7438P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1124
_refine_ls_wR_factor_ref         0.1135
_reflns_number_gt                9466
_reflns_number_total             9623
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b612121g.txt
_cod_data_source_block           025k
_cod_original_cell_volume        10921(6)
_cod_original_sg_symbol_H-M      I2/a
_cod_database_code               7202500