Synthesis, Structure and Cation-Binding Properties of Some [4 + 4] Metallocyclic MO2(2+) (M = Mo or W) Derivatives of 9-Phenyl-2,3,7-trihydroxyfluor-6-one.
McCormick, Laura J.; Abrahams, Brendan F.; Boughton, Berin A.; Grannas, Martin J.; Hudson, Timothy A.; Robson, Richard; Inorganic chemistry 53 (2014) 1721–1728; doi:10.1021/ic402860r

data_4337422
_publ_section_title
;
 Synthesis, Structure and Cation-Binding Properties of Some [4 + 4]
 Metallocyclic MO2(2+) (M = Mo or W) Derivatives of
 9-Phenyl-2,3,7-trihydroxyfluor-6-one.
;
_journal_issue                   3
_journal_name_full               'Inorganic chemistry'
_journal_page_first              1721
_journal_page_last               1728
_journal_paper_doi               10.1021/ic402860r
_journal_volume                  53
_journal_year                    2014
_chemical_formula_sum            'C139.75 H195.5 Mo4 N4 O36'
_chemical_formula_weight         2891.26
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 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                 94.508(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   26.8568(4)
_cell_length_b                   30.8169(4)
_cell_length_c                   17.4524(3)
_cell_measurement_reflns_used    12919
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      72.0665
_cell_measurement_theta_min      2.8639
_cell_volume                     14399.7(4)
_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      130(2)
_diffrn_detector_area_resol_mean 16.0711
_diffrn_measured_fraction_theta_full 0.966
_diffrn_measured_fraction_theta_max 0.966
_diffrn_measurement_device_type  'Xcalibur, Sapphire3'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0349
_diffrn_reflns_av_sigmaI/netI    0.0580
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       36
_diffrn_reflns_limit_k_min       -37
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            36180
_diffrn_reflns_theta_full        72.35
_diffrn_reflns_theta_max         72.35
_diffrn_reflns_theta_min         2.87
_exptl_absorpt_coefficient_mu    3.409
_exptl_absorpt_correction_T_max  0.776
_exptl_absorpt_correction_T_min  0.263
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 
CrysAlis171 .NET)(compiled Jan  8 2009,16:24:04)
Numerical absorption correction based on gaussian 
integration over a multifaceted crystal model
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.334
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             6072
_exptl_crystal_size_max          0.71
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.08
_platon_squeeze_details
;
Solvent accessible voids of ~1365 A^3 containing highly disordered solvent molecules were found within in the structure. Attempts to model the remaining electron 
density as solvent molecules proved unsuccessful. 
The PLATON/SQUEEZE routine was performed which found 310 electrons per unit cell. This corresponded to 17 MeOH molecules which were included in the formula.
;
_refine_diff_density_max         1.322
_refine_diff_density_min         -0.606
_refine_diff_density_rms         0.124
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.075(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.960
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           fullcycle
_refine_ls_number_parameters     1617
_refine_ls_number_reflns         22080
_refine_ls_number_restraints     100
_refine_ls_restrained_S_all      0.961
_refine_ls_R_factor_all          0.0963
_refine_ls_R_factor_gt           0.0812
_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^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2392
_refine_ls_wR_factor_ref         0.2517
_reflns_number_gt                16831
_reflns_number_total             22080
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic402860r_si_002.cif
_cod_data_source_block           9_MoEt4N
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      C2
_cod_original_formula_sum        'C139.75 H195.50 Mo4 N4 O36'
_cod_database_code               4337422