Synthesis of C2 and Cs symmetric zinc complexes supported by bis(phosphinimino)methyl ligands and their use in ring opening polymerisation catalysis
Hill, Michael S.; Hitchcock, Peter B.; Journal of the Chemical Society, Dalton Transactions  (2002) 4694–; doi:10.1039/b207358g

data_7012088
_publ_section_title
;
 Synthesis of C2 and Cs symmetric zinc complexes supported by
 bis(phosphinimino)methyl ligands and their use in ring opening
 polymerisation catalysis
;
_journal_issue                   24
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              4694
_journal_paper_doi               10.1039/b207358g
_journal_year                    2002
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C57 H64 N2 O1 Zn1'
_chemical_formula_sum            'C57 H64 N2 O P2 Zn'
_chemical_formula_weight         920.41
_chemical_name_common            '[Zn{OC6H3tBu2)(MesNPPh2CHPPh2NMes)]''
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/cifdics/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.1
_audit_creation_date             2001-12-04T16:27:48-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                94.210(2)
_cell_angle_beta                 106.701(3)
_cell_angle_gamma                110.514(3)
_cell_formula_units_Z            2
_cell_length_a                   12.9453(7)
_cell_length_b                   14.0557(9)
_cell_length_c                   15.6630(9)
_cell_measurement_reflns_used    7556
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      22.986
_cell_measurement_theta_min      4.076
_cell_measurement_wavelength     0.71073
_cell_volume                     2508.0(3)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device       KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0533
_diffrn_reflns_av_unetI/netI     0.082
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            13734
_diffrn_reflns_theta_full        23.01
_diffrn_reflns_theta_max         23.01
_diffrn_reflns_theta_min         4.15
_exptl_absorpt_coefficient_mu    0.594
_exptl_absorpt_correction_T_max  0.919
_exptl_absorpt_correction_T_min  0.887
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.219
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             976
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.269
_refine_diff_density_min         -0.337
_refine_diff_density_rms         0.06
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     594
_refine_ls_number_reflns         6926
_refine_ls_number_restraints     30
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0767
_refine_ls_R_factor_gt           0.048
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0283P)^2^+1.7301P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0944
_refine_ls_wR_factor_ref         0.1057
_reflns_number_gt                5141
_reflns_number_total             6926
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b207358g.txt
_cod_data_source_block           msh6-(dec301)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7012088