Zinc and magnesium complexes supported by bulky multidentate amino-ether phenolate ligands: potent pre-catalysts for the immortal ring-opening polymerisation of cyclic esters.
Poirier, Valentin; Roisnel, Thierry; Carpentier, Jean-François; Sarazin, Yann; Dalton transactions (Cambridge, England : 2003) 40 (2011) 523–534; doi:10.1039/c0dt01219j

data_7014852
_publ_section_title
;
 Zinc and magnesium complexes supported by bulky multidentate
 amino-ether phenolate ligands: potent pre-catalysts for the immortal
 ring-opening polymerisation of cyclic esters.
;
_journal_issue                   2
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              523
_journal_page_last               534
_journal_paper_doi               10.1039/c0dt01219j
_journal_volume                  40
_journal_year                    2011
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C29 H56 N2 O5 Si2 Zn'
_chemical_formula_sum            'C29 H56 N2 O5 Si2 Zn'
_chemical_formula_weight         634.31
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.3
_audit_creation_date             2010-05-27T09:11:24-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 95.431(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.9506(17)
_cell_length_b                   10.7275(7)
_cell_length_c                   23.4443(16)
_cell_measurement_reflns_used    5111
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.45
_cell_measurement_theta_min      2.58
_cell_measurement_wavelength     0.71073
_cell_volume                     3492.8(5)
_computing_cell_refinement       'Bruker SMART (Bruker, 2002)'
_computing_data_collection       'Bruker SAINT (Bruker, 2002)'
_computing_data_reduction        'Bruker SAINT (Bruker, 2002)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material
;
WinGX publication routines (Farrugia, 1999),
CRYSCAL (T. Roisnel, local program)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999))'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'APEXII, Bruker-AXS'
_diffrn_measurement_method       'CCD rotation images, thin slices'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0459
_diffrn_reflns_av_unetI/netI     0.0418
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            31084
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.93
_exptl_absorpt_coefficient_mu    0.807
_exptl_absorpt_correction_T_max  0.945
_exptl_absorpt_correction_T_min  0.809
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[Sheldrick, G.M. (2002). SADABS Bruker AXS Inc., Madison, Wisconsin, USA]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.206
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1368
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.379
_refine_diff_density_min         -0.227
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     368
_refine_ls_number_reflns         7992
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0451
_refine_ls_R_factor_gt           0.0323
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0326P)^2^+1.3500P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0756
_refine_ls_wR_factor_ref         0.0816
_reflns_number_gt                6530
_reflns_number_total             7992
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            C0DT01219J.TXT
_cod_data_source_block           job
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7014852