Sulfonamide, Phenolate, and Directing Ligand-Free Indium Initiators for the Ring-Opening Polymerization ofrac-Lactide
Blake, Matthew P.; Schwarz, Andrew D.; Mountford, Philip; Organometallics 30 (2011) 1202–; doi:10.1021/om101166s

data_4064161
_publ_section_title
;
 Sulfonamide, Phenolate, and Directing Ligand-Free Indium Initiators for
 the Ring-Opening Polymerization ofrac-Lactide
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              1202
_journal_paper_doi               10.1021/om101166s
_journal_volume                  30
_journal_year                    2011
_chemical_formula_moiety         'C22 H58 In2 O2 Si4'
_chemical_formula_sum            'C22 H58 In2 O2 Si4'
_chemical_formula_weight         696.68
_chemical_name_systematic
;
(In(OiPr)(CH2SiMe3))2
;
_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
_cell_angle_alpha                96.471(3)
_cell_angle_beta                 91.632(3)
_cell_angle_gamma                107.243(3)
_cell_formula_units_Z            2
_cell_length_a                   9.6970(5)
_cell_length_b                   10.1985(6)
_cell_length_c                   19.0880(13)
_cell_measurement_reflns_used    5142
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     1787.56(19)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 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    'SHELXS 86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.946
_diffrn_measured_fraction_theta_max 0.924
_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  0.000
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            11689
_diffrn_reflns_theta_full        25.078
_diffrn_reflns_theta_max         27.558
_diffrn_reflns_theta_min         5.103
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.438
_exptl_absorpt_correction_T_max  0.75
_exptl_absorpt_correction_T_min  0.73
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.294
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.83
_refine_diff_density_min         -1.21
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.1319
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         4558
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1077
_refine_ls_R_factor_gt           0.0650
_refine_ls_shift/su_max          0.0005811
_refine_ls_shift/su_mean         0.0000766
_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: 
 1.06 -0.627E-01 0.728 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0850
_refine_ls_wR_factor_gt          0.0596
_refine_ls_wR_factor_ref         0.0552
_reflns_limit_h_max              12
_reflns_limit_h_min              -12
_reflns_limit_k_max              13
_reflns_limit_k_min              -13
_reflns_limit_l_max              24
_reflns_limit_l_min              0
_reflns_number_gt                5227
_reflns_number_total             7647
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.72
_oxford_diffrn_Wilson_scale      26.70
_oxford_refine_ls_r_factor_ref   0.0522
_oxford_refine_ls_scale          0.2469(5)
_oxford_reflns_number_all        7647
_oxford_reflns_threshold_expression_ref I>3.0\s(I)
_cod_data_source_file            om101166s_si_001.cif
_cod_data_source_block           COMPOUND_17
_cod_original_sg_symbol_H-M      'P -1 '
_cod_database_code               4064161