Synthesis and structures of tridentate ketoiminate zinc complexes bearing trifluoromethyl substituents that act as L-lactide ring opening polymerization initiators.
Rezayee, Nomaan M.; Gerling, Kimberly A.; Rheingold, Arnold L.; Fritsch, Joseph M.; Dalton transactions (Cambridge, England : 2003) 42 (2013) 5573–5586; doi:10.1039/c3dt32314e

data_7022606
_publ_section_title
;
 Synthesis and structures of tridentate ketoiminate zinc complexes bearing
 trifluoromethyl substituents that act as L-lactide ring opening
 polymerization initiators.
;
_journal_issue                   15
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              5573
_journal_page_last               5586
_journal_paper_doi               10.1039/c3dt32314e
_journal_volume                  42
_journal_year                    2013
_chemical_formula_moiety         'C24 H36 F3 N3 O Si2 Zn'
_chemical_formula_sum            'C24 H36 F3 N3 O Si2 Zn'
_chemical_formula_weight         561.11
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 93.070(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.3993(18)
_cell_length_b                   14.898(3)
_cell_length_c                   19.859(4)
_cell_measurement_reflns_used    8296
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.92
_cell_measurement_theta_min      3.86
_cell_volume                     2776.9(10)
_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-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.965
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0455
_diffrn_reflns_av_sigmaI/netI    0.0425
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            38050
_diffrn_reflns_theta_full        29.50
_diffrn_reflns_theta_max         30.56
_diffrn_reflns_theta_min         3.86
_exptl_absorpt_coefficient_mu    1.012
_exptl_absorpt_correction_T_max  0.9511
_exptl_absorpt_correction_T_min  0.8465
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Bruker)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.342
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1176
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.585
_refine_diff_density_min         -0.341
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     317
_refine_ls_number_reflns         8233
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.0563
_refine_ls_R_factor_gt           0.0339
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0346P)^2^+1.1752P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0735
_refine_ls_wR_factor_ref         0.0820
_reflns_number_gt                6194
_reflns_number_total             8233
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt32314e.txt
_cod_data_source_block           pep111s
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        2776.8(9)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7022606