Cyclohexene Oxide/CO2 Copolymerization Catalyzed by Chromium(III) Salen Complexes and N-Methylimidazole: Effects of Varying Salen Ligand Substituents and Relative Cocatalyst Loading
Donald J. Darensbourg; Ryan M. Mackiewicz; Jody L. Rodgers; Cindy C. Fang; Damon R. Billodeaux; Joseph H. Reibenspies; Inorganic Chemistry 43 (2004) 6024–6034; doi:10.1021/ic049182e

data_4311586
_publ_section_title
;
 Cyclohexene Oxide/CO2 Copolymerization Catalyzed by Chromium(III) Salen
 Complexes and N-Methylimidazole: Effects of Varying Salen Ligand
 Substituents and Relative Cocatalyst Loading
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              6024
_journal_page_last               6034
_journal_paper_doi               10.1021/ic049182e
_journal_volume                  43
_journal_year                    2004
_chemical_formula_sum            'C52 H77 Cl Cr N2 O6'
_chemical_formula_weight         913.61
_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                 98.164(19)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.253(16)
_cell_length_b                   26.26(3)
_cell_length_c                   11.705(12)
_cell_measurement_reflns_used    218
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      46.522
_cell_measurement_theta_min      4.313
_cell_volume                     4945(9)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       '\h-\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  0.0795
_diffrn_reflns_av_sigmaI/netI    0.0691
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            20777
_diffrn_reflns_theta_full        23.38
_diffrn_reflns_theta_max         23.38
_diffrn_reflns_theta_min         1.48
_diffrn_standards_decay_%        'less than 1%'
_exptl_absorpt_coefficient_mu    0.335
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.227
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             1968
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.887
_refine_diff_density_min         -0.530
_refine_diff_density_rms         0.079
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     571
_refine_ls_number_reflns         7143
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.1109
_refine_ls_R_factor_gt           0.0644
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0522P)^2^+17.4488P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1422
_refine_ls_wR_factor_ref         0.1727
_reflns_number_gt                4788
_reflns_number_total             7143
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic049182esi20040629_114309_6.cif
_cod_data_source_block           complex11a
_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_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               4311586