High-Spin and Spin-Crossover Behavior in Monomethylated Bis(indenyl)chromium(II) Complexes
Meredith, M. Brett; Crisp, Jeffrey A.; Brady, Erik D.; Hanusa, Timothy P.; Yee, Gordon T.; Brooks, Neil R.; Kucera, Benjamin E.; Young, Victor G.; Organometallics 25 (2006) 4945–; doi:10.1021/om060534u

data_4074299
_publ_section_title
;
 High-Spin and Spin-Crossover Behavior in Monomethylated
 Bis(indenyl)chromium(II) Complexes
;
_journal_issue                   21
_journal_name_full               Organometallics
_journal_page_first              4945
_journal_paper_doi               10.1021/om060534u
_journal_volume                  25
_journal_year                    2006
_chemical_formula_moiety         'C30 H27 Cr2 Cl, 0.5(C7 H8)'
_chemical_formula_sum            'C33.5 H31 Cl Cr2'
_chemical_formula_weight         573.03
_chemical_name_common            05138
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 95.473(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   24.675(4)
_cell_length_b                   6.7882(10)
_cell_length_c                   16.172(2)
_cell_measurement_reflns_used    3284
_cell_measurement_temperature    173(2)
_cell_volume                     2696.4(7)
_computing_cell_refinement       'SAINT, Bruker'
_computing_data_collection       'SMART, Bruker'
_computing_data_reduction        'SAINT, Bruker'
_computing_molecular_graphics    'SHELXTL, Bruker'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Siemens SMART Platform CCD'
_diffrn_measurement_method       'area detector, omega scans per phi'
_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  0.0921
_diffrn_reflns_av_sigmaI/netI    0.1170
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            15782
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         0.83
_exptl_absorpt_coefficient_mu    0.926
_exptl_absorpt_correction_T_max  0.9552
_exptl_absorpt_correction_T_min  0.7686
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, R. Blessing, 1995'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.412
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1188
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.684
_refine_diff_density_min         -0.425
_refine_diff_density_rms         0.089
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     367
_refine_ls_number_reflns         4718
_refine_ls_number_restraints     169
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.1619
_refine_ls_R_factor_gt           0.0849
_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^)+(0.1014P)^2^+0.9341P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1924
_refine_ls_wR_factor_ref         0.2190
_reflns_number_gt                2425
_reflns_number_total             4718
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om060534usi20060527_020708.cif
_cod_data_source_block           05138s2
_cod_original_cell_volume        2696.5(7)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_original_formula_sum        'C33.50 H31 Cl Cr2'
_cod_database_code               4074299