Sulfonamide-Supported Aluminum Catalysts for the Ring-Opening Polymerization ofrac-Lactide
Schwarz, Andrew D.; Chu, Zengyong; Mountford, Philip; Organometallics 29 (2010) 1246–; doi:10.1021/om901070g

data_4067680
_publ_section_title
;
 Sulfonamide-Supported Aluminum Catalysts for the Ring-Opening
 Polymerization ofrac-Lactide
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              1246
_journal_paper_doi               10.1021/om901070g
_journal_volume                  29
_journal_year                    2010
_chemical_formula_moiety         'C27 H34 Al1 N3 O4 S2'
_chemical_formula_sum            'C27 H34 Al N3 O4 S2'
_chemical_formula_weight         555.70
_chemical_name_systematic
;
Al(N2_Ts_N_Ph)Et
;
_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
_cell_angle_alpha                90
_cell_angle_beta                 108.6423(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.66370(10)
_cell_length_b                   15.0088(2)
_cell_length_c                   15.4108(2)
_cell_measurement_reflns_used    6464
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     2775.40(6)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1997-2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       'Nonius KappaCCD'
_diffrn_measurement_device_type  Area
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.073
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            39224
_diffrn_reflns_theta_full        26.886
_diffrn_reflns_theta_max         27.435
_diffrn_reflns_theta_min         5.097
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.261
_exptl_absorpt_correction_T_max  0.96
_exptl_absorpt_correction_T_min  0.84
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.330
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1176
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.34
_refine_diff_density_min         -0.30
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.1269
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     334
_refine_ls_number_reflns         3805
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0877
_refine_ls_R_factor_gt           0.0500
_refine_ls_shift/su_max          0.000606
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
 Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982) 
 [weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)] 
 where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax 
 Method = Robust Weighting (Prince, 1982) 
 W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^ 
 A~i~ are: 
 0.313 0.855E-01 0.642E-01 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0934
_refine_ls_wR_factor_gt          0.0499
_refine_ls_wR_factor_ref         0.0466
_reflns_limit_h_max              15
_reflns_limit_h_min              -16
_reflns_limit_k_max              19
_reflns_limit_k_min              0
_reflns_limit_l_max              19
_reflns_limit_l_min              0
_reflns_number_gt                4181
_reflns_number_total             6282
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.28
_oxford_diffrn_Wilson_scale      18.78
_oxford_refine_ls_r_factor_ref   0.0450
_oxford_refine_ls_scale          0.2386(4)
_oxford_reflns_number_all        6282
_oxford_reflns_threshold_expression_ref I>3.0\s(I)
_cod_data_source_file            om901070g_si_001.cif
_cod_data_source_block           COMPOUND_19
_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_Hall     -P2ybc
_cod_original_sg_symbol_H-M      'P 1 21/c 1 '
_cod_original_formula_sum        'C27 H34 Al1 N3 O4 S2'
_cod_database_code               4067680