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_4067677
_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         'C25 H31 N3 O4 S2'
_chemical_formula_sum            'C25 H31 N3 O4 S2'
_chemical_formula_weight         501.67
_chemical_name_systematic
;
PhCH2N(CH2CH2N(Ts)H)2
;
_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   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 97.2262(14)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.8932(2)
_cell_length_b                   10.8548(3)
_cell_length_c                   19.8155(5)
_cell_measurement_reflns_used    24915
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     2537.83(10)
_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 0.989
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.027
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            10216
_diffrn_reflns_theta_full        25.008
_diffrn_reflns_theta_max         27.482
_diffrn_reflns_theta_min         5.121
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.246
_exptl_absorpt_correction_T_max  0.95
_exptl_absorpt_correction_T_min  0.95
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.313
_exptl_crystal_description       plate
_exptl_crystal_F_000             1064
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.33
_refine_diff_density_min         -0.39
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0756
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     315
_refine_ls_number_reflns         4271
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0559
_refine_ls_R_factor_gt           0.0388
_refine_ls_shift/su_max          0.000594
_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: 
 1.26 1.08 1.22 0.385 0.323 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0485
_refine_ls_wR_factor_gt          0.0404
_refine_ls_wR_factor_ref         0.0404
_reflns_limit_h_max              15
_reflns_limit_h_min              -15
_reflns_limit_k_max              14
_reflns_limit_k_min              0
_reflns_limit_l_max              25
_reflns_limit_l_min              0
_reflns_number_gt                4271
_reflns_number_total             5732
_reflns_threshold_expression     I>3.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.46
_oxford_diffrn_Wilson_scale      4.46
_cod_data_source_file            om901070g_si_001.cif
_cod_data_source_block           COMPOUND_15
_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      'P 1 21/c 1 '
_cod_database_code               4067677