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_4074301
_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         'C20 H18 Cr'
_chemical_formula_sum            'C20 H18 Cr'
_chemical_formula_weight         310.34
_chemical_name_common            03031a
_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                 96.560(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.266(3)
_cell_length_b                   9.718(2)
_cell_length_c                   12.391(3)
_cell_measurement_reflns_used    3231
_cell_measurement_temperature    105(2)
_cell_measurement_theta_max      27.81
_cell_measurement_theta_min      2.67
_cell_volume                     1467.3(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      105(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and 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  0.0331
_diffrn_reflns_av_sigmaI/netI    0.0259
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            17270
_diffrn_reflns_theta_full        27.96
_diffrn_reflns_theta_max         27.96
_diffrn_reflns_theta_min         1.67
_exptl_absorpt_coefficient_mu    0.769
_exptl_absorpt_correction_T_max  0.8310
_exptl_absorpt_correction_T_min  0.7484
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2002)'
_exptl_crystal_colour            Grey
_exptl_crystal_density_diffrn    1.405
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.25
_refine_diff_density_max         1.780
_refine_diff_density_min         -0.608
_refine_diff_density_rms         0.093
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     192
_refine_ls_number_reflns         3486
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0609
_refine_ls_R_factor_gt           0.0477
_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^)+(0.0622P)^2^+2.1434P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1240
_refine_ls_wR_factor_ref         0.1341
_reflns_number_gt                2865
_reflns_number_total             3486
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om060534usi20060619_104053.cif
_cod_data_source_block           03031a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1467.4(6)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4074301