Reactions of 2,2‘-Methylenebis(4-chloro-6-isopropyl-3-methylphenol) with Trimethylaluminum: Highly Efficient Catalysts for the Ring-Opening Polymerization of Lactones
Chen, Huei-Ling; Ko, Bao-Tsan; Huang, Bor-Hunn; Lin, Chu-Chieh; Organometallics 20 (2001) 5076–; doi:10.1021/om010425+

data_4084086
_publ_section_title
;
 Reactions of
 2,2&#x2018;-Methylenebis(4-chloro-6-isopropyl-3-methylphenol) with
 Trimethylaluminum:&#x00A0; Highly Efficient Catalysts for the
 Ring-Opening Polymerization of Lactones
;
_journal_issue                   24
_journal_name_full               Organometallics
_journal_page_first              5076
_journal_paper_doi               10.1021/om010425+
_journal_volume                  20
_journal_year                    2001
_chemical_formula_sum            'C29 H44 Al2 Cl2 O4'
_chemical_formula_weight         581.50
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                85.655(2)
_cell_angle_beta                 78.988(2)
_cell_angle_gamma                74.633(2)
_cell_formula_units_Z            4
_cell_length_a                   12.9152(9)
_cell_length_b                   13.7773(11)
_cell_length_c                   19.8008(15)
_cell_measurement_temperature    293(2)
_cell_volume                     3333.6(4)
_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      293(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0242
_diffrn_reflns_av_sigmaI/netI    0.0489
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            18857
_diffrn_reflns_theta_full        26.04
_diffrn_reflns_theta_max         26.04
_diffrn_reflns_theta_min         1.88
_exptl_absorpt_coefficient_mu    0.277
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.159
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1240
_refine_diff_density_max         0.431
_refine_diff_density_min         -0.349
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     667
_refine_ls_number_reflns         12889
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.082
_refine_ls_R_factor_all          0.1168
_refine_ls_R_factor_gt           0.0636
_refine_ls_shift/su_max          4.459
_refine_ls_shift/su_mean         0.099
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1762
_refine_ls_wR_factor_ref         0.2055
_reflns_number_gt                6852
_reflns_number_total             12889
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om010425%2B.cif
_cod_data_source_block           chen11m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4084086