Mono-oxo molybdenum(vi) and tungsten(vi) complexes bearing chelating aryloxides: synthesis, structure and ring opening polymerization of cyclic esters
Sun, Ziyue; Zhao, Yanxia; Prior, Timothy J.; Elsegood, Mark R. J.; Wang, Kuiyuan; Xing, Tian; Redshaw, Carl; Dalton Transactions  (2019) –; doi:10.1039/C8DT04566F

data_7048580
_publ_section_title
;
 Mono-oxo molybdenum(vi) and tungsten(vi) complexes bearing chelating
 aryloxides: synthesis, structure and ring opening polymerization of
 cyclic esters
;
_journal_name_full               'Dalton Transactions'
_journal_paper_doi               10.1039/C8DT04566F
_journal_year                    2019
_chemical_formula_moiety         'C128 H172 O10 W2'
_chemical_formula_sum            'C128 H172 O10 W2'
_chemical_formula_weight         2238.35
_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
_atom_sites_solution_primary     iterative
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2018-08-10 deposited with the CCDC.
2018-12-26 downloaded from the CCDC.
;
_cell_angle_alpha                69.394(2)
_cell_angle_beta                 90.178(2)
_cell_angle_gamma                64.723(2)
_cell_formula_units_Z            2
_cell_length_a                   17.9604(4)
_cell_length_b                   18.9135(5)
_cell_length_c                   22.3389(5)
_cell_measurement_reflns_used    36816
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.498
_cell_measurement_theta_min      2.074
_cell_volume                     6316.5(3)
_computing_cell_refinement
;
CrystalClear-SM Expert 3.1 b27 (Rigaku, 20112)
;
_computing_data_collection
;
CrystalClear-SM Expert 3.1 b27 (Rigaku, 20112)
;
_computing_data_reduction
;
CrystalClear-SM Expert 3.1 b27 (Rigaku, 20112)
;
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku HG Saturn724+ (2x2 bin mode)'
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0901
_diffrn_reflns_av_unetI/netI     0.0799
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            132368
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.494
_diffrn_reflns_theta_min         2.151
_diffrn_source                   'Rotating anode'
_exptl_absorpt_coefficient_mu    1.871
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.701
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.9g (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.177
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2336
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: acetonitrile'
_exptl_crystal_size_max          0.220
_exptl_crystal_size_mid          0.020
_exptl_crystal_size_min          0.010
_refine_diff_density_max         3.611
_refine_diff_density_min         -1.997
_refine_diff_density_rms         0.145
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1344
_refine_ls_number_reflns         28978
_refine_ls_number_restraints     356
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0984
_refine_ls_R_factor_gt           0.0621
_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^)+(0.0105P)^2^+46.3551P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1132
_refine_ls_wR_factor_ref         0.1238
_reflns_Friedel_coverage         0.000
_reflns_number_gt                20575
_reflns_number_total             28978
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt04566f2.cif
_cod_data_source_block           5
_cod_database_code               7048580
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.684
_shelx_estimated_absorpt_t_max   0.982
_shelx_res_checksum              23003