Configurationally flexible zinc complexes as catalysts for rac-lactide polymerisation.
Daneshmand, Pargol; Michalsky, Ina; Aguiar, Pedro M.; Schaper, Frank; Dalton transactions (Cambridge, England : 2003) 47 (2018) 16279–16291; doi:10.1039/c8dt02562b

data_7047806
_publ_section_title
;
 Configurationally flexible zinc complexes as catalysts for rac-lactide
 polymerisation.
;
_journal_issue                   45
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              16279
_journal_page_last               16291
_journal_paper_doi               10.1039/c8dt02562b
_journal_volume                  47
_journal_year                    2018
_chemical_formula_moiety         'C33 H52 N4 O Si2 Zn, C6 H14'
_chemical_formula_sum            'C39 H66 N4 O Si2 Zn'
_chemical_formula_weight         728.50
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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     dual
_atom_sites_solution_secondary   difmap
_audit_creation_date             2018-06-19
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2018-06-19 deposited with the CCDC.
2018-10-08 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 105.3650(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.8720(5)
_cell_length_b                   18.6906(5)
_cell_length_c                   12.3226(3)
_cell_measurement_reflns_used    9556
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      60.58
_cell_measurement_theta_min      2.95
_cell_volume                     4191.18(19)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_collection
'APEX 2 (2013) Bruker AXS Inc., Madison, WI 53719-1173.'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      150
_diffrn_detector_area_resol_mean 10.24
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker Venture Metaljet'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           GaK\a
_diffrn_radiation_wavelength     1.34139
_diffrn_reflns_av_R_equivalents  0.0311
_diffrn_reflns_av_unetI/netI     0.0163
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            70912
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         60.670
_diffrn_reflns_theta_min         2.112
_diffrn_source                   'Metal Jet'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.010
_exptl_absorpt_correction_T_max  0.7519
_exptl_absorpt_correction_T_min  0.6935
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/2 (Bruker,2014/2) was used for absorption correction. wR2(int) was 0.1437 before and 0.0483 after correction. The Ratio of minimum to maximum transmission is 0.9223. The \l/2 correction factor is 0.00150.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.155
_exptl_crystal_description       block
_exptl_crystal_F_000             1576
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.905
_refine_diff_density_min         -0.751
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     438
_refine_ls_number_reflns         9608
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0567
_refine_ls_R_factor_gt           0.0509
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0792P)^2^+3.0040P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1396
_refine_ls_wR_factor_ref         0.1462
_reflns_Friedel_coverage         0.000
_reflns_number_gt                8521
_reflns_number_total             9608
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt02562b2.cif
_cod_data_source_block           comp10
_cod_depositor_comments
'Adding full bibliography for 7047804--7047808.cif.'
_cod_database_code               7047806
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.924
_shelx_estimated_absorpt_t_min   0.872
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C1(H1a,H1b), C16(H16a,H16b), C22(H22a,H22b), C35(H35a,H35b), C36(H36a,H36b),
 C37(H37a,H37b), C38(H38a,H38b)
2.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C5(H5), C18(H18), C19(H19), C20(H20), C21(H21), C24(H24), C25(H25),
 C26(H26), C27(H27)
2.c Idealised Me refined as rotating group:
 C9(H9a,H9b,H9c), C10(H10a,H10b,H10c), C11(H11a,H11b,H11c), C13(H13a,H13b,
 H13c), C14(H14a,H14b,H14c), C15(H15a,H15b,H15c), C28(H28a,H28b,H28c), C29(H29a,
 H29b,H29c), C30(H30a,H30b,H30c), C31(H31a,H31b,H31c), C32(H32a,H32b,H32c),
 C33(H33a,H33b,H33c), C34(H34a,H34b,H34c), C39(H39a,H39b,H39c)
;
_shelx_res_checksum              2018
_olex2_submission_special_instructions 'No special instructions were received'