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_4311583
_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            'C32 H48 N2 O2'
_chemical_formula_weight         492.72
_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                 92.658(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.145(3)
_cell_length_b                   17.600(8)
_cell_length_c                   27.415(13)
_cell_measurement_reflns_used    107
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      46.340
_cell_measurement_theta_min      4.616
_cell_volume                     2962(2)
_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 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0921
_diffrn_reflns_av_sigmaI/netI    0.0744
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            13034
_diffrn_reflns_theta_full        23.36
_diffrn_reflns_theta_max         23.36
_diffrn_reflns_theta_min         1.38
_diffrn_standards_decay_%        'less than 1%'
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.105
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1080
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.468
_refine_diff_density_min         -0.354
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.958
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     339
_refine_ls_number_reflns         4272
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.958
_refine_ls_R_factor_all          0.0799
_refine_ls_R_factor_gt           0.0541
_refine_ls_shift/su_max          0.016
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0932P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1400
_refine_ls_wR_factor_ref         0.1592
_reflns_number_gt                2952
_reflns_number_total             4272
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic049182esi20040629_114309_3.cif
_cod_data_source_block           ligand7
_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 
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_cod_database_code               4311583