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_7014851
_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_absolute_configuration unk
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         '2(C21 H35 N O2)'
_chemical_formula_sum            'C21 H35 N O2'
_chemical_formula_weight         333
_space_group_IT_number           145
_symmetry_cell_setting           trigonal
_symmetry_Int_Tables_number      145
_symmetry_space_group_name_Hall  'P 32'
_symmetry_space_group_name_H-M   'P 32'
_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             2009-05-07T11:45:42-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            6
_cell_length_a                   10.7292(3)
_cell_length_b                   10.7292
_cell_length_c                   29.5051(9)
_cell_measurement_reflns_used    9912
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.12
_cell_measurement_theta_min      2.19
_cell_measurement_wavelength     0.71073
_cell_volume                     2941.46(12)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SAINT'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      100(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  0.0585
_diffrn_reflns_av_unetI/netI     0.0342
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            37354
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  0.967
_exptl_absorpt_correction_T_min  0.939
_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    1.13
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1104
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.52
_exptl_crystal_size_min          0.47
_refine_diff_density_max         0.193
_refine_diff_density_min         -0.2
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -10(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.198
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     449
_refine_ls_number_reflns         4476
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.198
_refine_ls_R_factor_all          0.0412
_refine_ls_R_factor_gt           0.0367
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0482P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0879
_refine_ls_wR_factor_ref         0.0903
_reflns_number_gt                4105
_reflns_number_total             4476
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            C0DT01219J.TXT
_cod_data_source_block           job5
_cod_original_cell_volume        2941.45(12)
_cod_database_code               7014851