Thermally Stable Chromium(III)η3-Allyl Complexes. Direct Structural Comparison of Neutral Chromium(II) and Cationic Chromium(III)η3-Allyl Redox Isomers
Norman, David W.; McDonald, Robert; Stryker, Jeffrey M.; Organometallics 24 (2005) 4461–; doi:10.1021/om050415z

data_4076001
_publ_section_title
;
 Thermally Stable Chromium(III)\h3-Allyl Complexes. Direct Structural
 Comparison of Neutral Chromium(II) and Cationic Chromium(III)\h3-Allyl
 Redox Isomers
;
_journal_issue                   18
_journal_name_full               Organometallics
_journal_page_first              4461
_journal_paper_doi               10.1021/om050415z
_journal_volume                  24
_journal_year                    2005
_chemical_formula_moiety         'C31 H34 Cr N2 O2, 0.5(C4 H8 O)'
_chemical_formula_sum            'C33 H38 Cr N2 O2.5'
_chemical_formula_weight         554.65
_chemical_name_systematic
; 

 ? 

;
_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           'manual editing of SHELXL template'
_cell_angle_alpha                90.00
_cell_angle_beta                 115.8337(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   42.1994(18)
_cell_length_b                   8.4552(4)
_cell_length_c                   37.1949(16)
_cell_measurement_reflns_used    6288
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      26.37
_cell_measurement_theta_min      2.43
_cell_volume                     11945.0(9)
_computing_cell_refinement       'Bruker SAINT (Bruker, 1997)'
_computing_data_collection       'Bruker SMART (Bruker, 1997)'
_computing_data_reduction        'Bruker SAINT (Bruker, 1997)'
_computing_molecular_graphics    'Bruker SHELXTL (Bruker, 1997)'
_computing_publication_material  'Bruker SHELXTL (Bruker, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 8.192
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type
'Bruker PLATFORM diffractometer/SMART 1000 CCD area detector'
_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  0.0243
_diffrn_reflns_av_sigmaI/netI    0.0220
_diffrn_reflns_limit_h_max       52
_diffrn_reflns_limit_h_min       -52
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       46
_diffrn_reflns_limit_l_min       -46
_diffrn_reflns_number            42823
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         1.07
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.416
_exptl_absorpt_correction_T_max  0.9479
_exptl_absorpt_correction_T_min  0.8097
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             4704
_exptl_crystal_size_max          0.53
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.841
_refine_diff_density_min         -0.448
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     703
_refine_ls_number_reflns         12209
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0562
_refine_ls_R_factor_gt           0.0482
_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^)+(0.0747P)^2^+18.9822P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1329
_refine_ls_wR_factor_ref         0.1396
_reflns_number_gt                10518
_reflns_number_total             12209
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om050415zsi20050525_053205.cif
_cod_data_source_block           8
_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_sg_symbol_H-M      'I 2/a'
_cod_database_code               4076001