Carbonate and oxalate dianions as prolific hydrogen-bond acceptors in supramolecular assembly
Lam, Chi-Keung; Mak, Thomas C. W.; Chemical Communications (Cambridge, United Kingdom)  (2003) 2660–2661; doi:10.1039/b306649e

data_7113680
_publ_section_title
;
 Carbonate and oxalate dianions as prolific hydrogen-bond acceptors in
 supramolecular assembly
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   21
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              2660
_journal_page_last               2661
_journal_paper_doi               10.1039/b306649e
_journal_year                    2003
_chemical_formula_sum            'C24 H68 N16 O3 S7'
_chemical_formula_weight         853.36
_chemical_name_systematic
;
 bis(tetraethylammonium) carbonate hepta-thiourea
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 124.009(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   25.462(4)
_cell_length_b                   12.901(2)
_cell_length_c                   17.355(3)
_cell_measurement_temperature    293(2)
_cell_volume                     4725.7(13)
_computing_cell_refinement       'SAINT-PLUS, Ver. 5.0, Bruker AXS, 1997.'
_computing_data_collection       'SMART for Windows NT, Bruker AXS, 1997.'
_computing_data_reduction        'SAINT-PLUS, Ver. 5.0, Bruker AXS, 1997.'
_computing_molecular_graphics    'XP-Interactive Molecular Graphics, Ver. 5.1'
_computing_publication_material  'SHELXTL-Bruker AXS, 1998.'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  Bruker_SMART_CCD_1K_area_detector
_diffrn_measurement_method       Omega_scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
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_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            14020
_diffrn_reflns_theta_full        26.09
_diffrn_reflns_theta_max         26.09
_diffrn_reflns_theta_min         1.85
_exptl_absorpt_coefficient_mu    0.377
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.774311
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.199
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1840
_exptl_crystal_size_max          0.74
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_refine_ls_extinction_coef       0.0012(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
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_refine_ls_number_reflns         4656
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0654
_refine_ls_R_factor_gt           0.0511
_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^)+(0.0938P)^2^+3.2263P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1473
_refine_ls_wR_factor_ref         0.1636
_reflns_number_gt                3592
_reflns_number_total             4656
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             7104863
_cod_data_source_file            b306649e.txt
_cod_data_source_block           Compound(1)
_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/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Empirical'
changed to 'empirical' 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_cell_volume        4725.8(14)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7113680