Lactide polymerization catalyzed by Mg and Zn diketiminate complexes with flexible ligand frameworks.
Whitehorne, Todd J. J.; Vabre, Boris; Schaper, Frank; Dalton transactions (Cambridge, England : 2003) 43 (2014) 6339–6352; doi:10.1039/c3dt53278j

data_7030031
_publ_section_title
;
 Lactide polymerization catalyzed by Mg and Zn diketiminate complexes with
 flexible ligand frameworks.
;
_journal_issue                   17
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6339
_journal_page_last               6352
_journal_paper_doi               10.1039/c3dt53278j
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety         'C41 H47 N3 Si2 Zn, C7 H8'
_chemical_formula_sum            'C48 H55 N3 Si2 Zn'
_chemical_formula_weight         795.50
_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                84.7981(11)
_cell_angle_beta                 86.8527(12)
_cell_angle_gamma                83.0374(10)
_cell_formula_units_Z            4
_cell_length_a                   13.0063(3)
_cell_length_b                   15.7472(4)
_cell_length_c                   20.9693(5)
_cell_measurement_reflns_used    9582
_cell_measurement_temperature    150
_cell_measurement_theta_max      72.19
_cell_measurement_theta_min      3.39
_cell_volume                     4241.36(18)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150
_diffrn_detector_area_resol_mean 5.5
_diffrn_measured_fraction_theta_full 0.957
_diffrn_measured_fraction_theta_max 0.957
_diffrn_measurement_device_type  'Bruker SMART 6000 / Nonius FR591'
_diffrn_measurement_method       '\w scan'
_diffrn_radiation_monochromator  'Helios multi-layers optics'
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0339
_diffrn_reflns_av_sigmaI/netI    0.0263
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            56188
_diffrn_reflns_theta_full        72.59
_diffrn_reflns_theta_max         72.59
_diffrn_reflns_theta_min         2.12
_exptl_absorpt_coefficient_mu    1.613
_exptl_absorpt_correction_T_max  0.817468
_exptl_absorpt_correction_T_min  0.599126
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.246
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1688
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.083
_refine_diff_density_min         -0.727
_refine_diff_density_rms         0.098
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.913
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     979
_refine_ls_number_reflns         16111
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.913
_refine_ls_R_factor_all          0.0449
_refine_ls_R_factor_gt           0.0404
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0931P)^2^+1.0692P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1144
_refine_ls_wR_factor_ref         0.1181
_reflns_number_gt                13946
_reflns_number_total             16111
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt53278j2.cif
_cod_data_source_block           todd10
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/RSC/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               7030031