Structural complexity of the magnesiation of furan: an octadecanuclear product with a subporphyrin-like Mg3(2,5-fur-di-yl)3 substructure.
Blair, Victoria L.; Kennedy, Alan R.; Klett, Jan; Mulvey, Robert E.; Chemical communications (Cambridge, England)  (2008) 5426–5428; doi:10.1039/b812147h

data_7113141
_publ_section_title
;
 Structural complexity of the magnesiation of furan: an octadecanuclear
 product with a subporphyrin-like Mg3(2,5-fur-di-yl)3 substructure.
;
_journal_issue                   42
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              5426
_journal_page_last               5428
_journal_paper_doi               10.1039/b812147h
_journal_year                    2008
_chemical_formula_sum            'C108 H160 Mg6 N12 Na12 O16 Si2'
_chemical_formula_weight         2360.40
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
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_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                61.930(5)
_cell_angle_beta                 73.749(4)
_cell_angle_gamma                63.757(4)
_cell_formula_units_Z            1
_cell_length_a                   15.5127(6)
_cell_length_b                   16.7993(7)
_cell_length_c                   17.7608(8)
_cell_measurement_reflns_used    2553
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      29.18
_cell_measurement_theta_min      2.51
_cell_volume                     3648.0(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.950
_diffrn_measured_fraction_theta_max 0.950
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur S'
_diffrn_measurement_method       'omega scans'
_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  0.0234
_diffrn_reflns_av_sigmaI/netI    0.0652
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            21042
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.52
_exptl_absorpt_coefficient_mu    0.140
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.96338
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.17 (release 11-02-2008 CrysAlis171 .NET)
(compiled Feb 11 2008,09:33:37)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.074
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             1252
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.743
_refine_diff_density_min         -0.410
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.959
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     704
_refine_ls_number_reflns         12205
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      0.969
_refine_ls_R_factor_all          0.0947
_refine_ls_R_factor_gt           0.0565
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1018P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1528
_refine_ls_wR_factor_ref         0.1662
_reflns_number_gt                7447
_reflns_number_total             12205
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b812147h.txt
_cod_data_source_block           rab2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'TRICLINIC' changed to 'triclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/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      P-1
_cod_database_code               7113141