Mononuclear Salen-gallium complexes for iso-selective ring-opening polymerization (ROP) of rac-lactide
SPECKLIN, David; Fliedel, Christophe; Hild, Frédéric; Mameri, Samir; Karmazin, Lydia; Bailly, Corinne; Dagorne, Samuel; Dalton Trans.  (2017) –; doi:10.1039/C7DT02730C

data_7044152
_publ_section_title
;
 Mononuclear Salen-gallium complexes for iso-selective ring-opening
 polymerization (ROP) of rac-lactide
;
_journal_name_full               'Dalton Trans.'
_journal_paper_doi               10.1039/C7DT02730C
_journal_year                    2017
_chemical_formula_moiety         'C25 H25 Ga N2 O3'
_chemical_formula_sum            'C25 H25 Ga N2 O3'
_chemical_formula_weight         471.19
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2017-03-24 deposited with the CCDC.
2017-09-08 downloaded from the CCDC.
;
_cell_angle_alpha                80.6510(10)
_cell_angle_beta                 71.1630(10)
_cell_angle_gamma                87.5770(10)
_cell_formula_units_Z            2
_cell_length_a                   9.1244(4)
_cell_length_b                   9.6705(5)
_cell_length_c                   13.0817(6)
_cell_measurement_reflns_used    5755
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.93
_cell_measurement_theta_min      2.41
_cell_volume                     1077.90(9)
_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-2013 (Sheldrick 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  triumph
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0221
_diffrn_reflns_av_unetI/netI     0.0270
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            13711
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.009
_diffrn_reflns_theta_min         2.134
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    1.306
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6805
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.452
_exptl_crystal_description       block
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.523
_refine_diff_density_min         -0.247
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     282
_refine_ls_number_reflns         5176
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0365
_refine_ls_R_factor_gt           0.0288
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0335P)^2^+0.4702P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0681
_refine_ls_wR_factor_ref         0.0710
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4543
_reflns_number_total             5176
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt02730c2.cif
_cod_data_source_block           sdcf140425
_cod_database_code               7044152
_shelx_estimated_absorpt_t_min   0.780
_shelx_estimated_absorpt_t_max   0.880
_shelxl_version_number           2013-4
_shelx_res_checksum              53563