Exploring the versatility of a bis(phosphinimine) pincer ligand: effect of sterics on structure and lactide polymerization activity of cationic zinc complexes
Wheaton, Craig A.; Hayes, Paul G.; Catal. Sci. Technol. 2 (2012) 125–; doi:10.1039/C1CY00306B

data_1556286
_publ_section_title
;
 Exploring the versatility of a bis(phosphinimine) pincer ligand: effect
 of sterics on structure and lactide polymerization activity of cationic
 zinc complexes
;
_journal_issue                   1
_journal_name_full               'Catal. Sci. Technol.'
_journal_page_first              125
_journal_paper_doi               10.1039/C1CY00306B
_journal_volume                  2
_journal_year                    2012
_chemical_formula_sum            'C54.2 H48.4 Cl0.4 N2 O P2'
_chemical_formula_weight         819.87
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                62.3130(10)
_cell_angle_beta                 86.1340(10)
_cell_angle_gamma                78.1150(10)
_cell_formula_units_Z            2
_cell_length_a                   11.5434(11)
_cell_length_b                   14.8956(15)
_cell_length_c                   15.1659(15)
_cell_measurement_reflns_used    8967
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      54.126
_cell_measurement_theta_min      4.421
_cell_volume                     2258.4(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0611
_diffrn_reflns_av_sigmaI/netI    0.0844
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            26448
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.60
_exptl_absorpt_coefficient_mu    0.161
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6810
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.206
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             865
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.690
_refine_diff_density_min         -0.308
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.110
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     563
_refine_ls_number_reflns         7960
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.110
_refine_ls_R_factor_all          0.1432
_refine_ls_R_factor_gt           0.0646
_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^)+(0.0551P)^2^+3.0800P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1472
_refine_ls_wR_factor_ref         0.1827
_reflns_number_gt                4429
_reflns_number_total             7960
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1cy00306b.txt
_cod_data_source_block           L1
_cod_original_sg_symbol_H-M      P-1
_cod_original_formula_sum        'C54.20 H48.40 Cl0.40 N2 O P2'
_cod_database_code               1556286