Ethyleneglycol tungsten complexes of calix[6 and 8]arenes: synthesis, characterization and ROP of ε-caprolactone.
Li, Yuanzhuo; Zhao, Ke-Qing; Feng, Chun; Elsegood, Mark R. J.; Prior, Timothy J.; Sun, Xinsen; Redshaw, Carl; Dalton transactions (Cambridge, England : 2003) 43 (2014) 13612–13619; doi:10.1039/c4dt01936a

data_7032358
_publ_section_title
;
 Ethyleneglycol tungsten complexes of calix[6 and 8]arenes: synthesis,
 characterization and ROP of \e-caprolactone.
;
_journal_issue                   36
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              13612
_journal_page_last               13619
_journal_paper_doi               10.1039/c4dt01936a
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety
;
C72 H92 O14 W2, 0.83(C7 H8), C2 N
;
_chemical_formula_sum            'C79.75 H98.75 N O14 W2'
_chemical_formula_weight         1663.05
_chemical_name_systematic
;
 ?
;
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 104.805(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.7129(9)
_cell_length_b                   13.6419(7)
_cell_length_c                   31.4289(16)
_cell_measurement_reflns_used    8377
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.4977
_cell_measurement_theta_min      2.9122
_cell_volume                     8171.3(7)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET)
(compiled Jan 23 2012,18:06:46)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET)
(compiled Jan 23 2012,18:06:46)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET)
(compiled Jan 23 2012,18:06:46)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution
;
SHELXS, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 15.9784
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.893
_diffrn_measurement_device_type  'SuperNova, Single source at offset), Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0453
_diffrn_reflns_av_sigmaI/netI    0.0688
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       42
_diffrn_reflns_limit_l_min       -42
_diffrn_reflns_number            46158
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.56
_diffrn_reflns_theta_min         2.92
_exptl_absorpt_coefficient_mu    2.871
_exptl_absorpt_correction_T_max  0.5975
_exptl_absorpt_correction_T_min  0.4796
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET)
(compiled Jan 23 2012,18:06:46)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.

Tmax = 1. Tmin = 0.87393
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.352
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3377
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.034
_refine_diff_density_min         -0.884
_refine_diff_density_rms         0.112
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     814
_refine_ls_number_reflns         18607
_refine_ls_number_restraints     977
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0901
_refine_ls_R_factor_gt           0.0552
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0566P)^2^+8.9798P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1246
_refine_ls_wR_factor_ref         0.1415
_reflns_number_gt                12892
_reflns_number_total             18607
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             7031771
_cod_data_source_file            c4dt01936a2.cif
_cod_data_source_block           luo-5-yellow
_cod_database_code               7032358