Phosphinimino-amino Magnesium Complexes: Synthesis and Catalysis of Heteroselective ROP ofrac-Lactide
Xie, Hongyan; Mou, Zehuai; Liu, Bo; Li, Ping; Rong, Weifeng; Li, Shihui; Cui, Dongmei; Organometallics 33 (2014) 722–; doi:10.1021/om401056s

data_4082449
_publ_section_title
;
 Phosphinimino-amino Magnesium Complexes: Synthesis and Catalysis of
 Heteroselective ROP ofrac-Lactide
;
_journal_issue                   3
_journal_name_full               Organometallics
_journal_page_first              722
_journal_paper_doi               10.1021/om401056s
_journal_volume                  33
_journal_year                    2014
_chemical_formula_sum            'C48 H59 Mg N2 O P'
_chemical_formula_weight         735.25
_chemical_name_systematic
; 
 ? 
;
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 104.000(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.8506(10)
_cell_length_b                   22.030(2)
_cell_length_c                   18.7823(18)
_cell_measurement_temperature    273(2)
_cell_volume                     4356.3(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0772
_diffrn_reflns_av_sigmaI/netI    0.0872
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            25416
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         1.45
_exptl_absorpt_coefficient_mu    0.113
_exptl_absorpt_correction_T_max  0.9832
_exptl_absorpt_correction_T_min  0.9777
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.121
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1584
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.274
_refine_diff_density_min         -0.239
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.003
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     485
_refine_ls_number_reflns         7667
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.1107
_refine_ls_R_factor_gt           0.0593
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0629P)^2^+0.3055P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1222
_refine_ls_wR_factor_ref         0.1437
_reflns_number_gt                4712
_reflns_number_total             7667
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om401056s_si_002.cif
_cod_data_source_block           4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/current/ACS/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_cell_volume        4356.4(7)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4082449