Molecular tectonics: from enantiomerically pure sugars to enantiomerically pure triple stranded helical coordination network
Grosshans, Philippe; Jouaiti, Abdelaziz; Bulach, Véronique; Planeix, Jean-Marc; Hosseini, Mir Wais; Nicoud, Jean-François; Chemical Communications (Cambridge, United Kingdom)  (2003) 1336–1337; doi:10.1039/b303238h

data_7103712
_publ_section_title
;
 Molecular tectonics: from enantiomerically pure sugars to
 enantiomerically pure triple stranded helical coordination network
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   12
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              1336
_journal_page_last               1337
_journal_paper_doi               10.1039/b303238h
_journal_year                    2003
_chemical_compound_source        'Local laboratory'
_chemical_formula_moiety         'C18 H16 Cl2 Hg N2 O6 '
_chemical_formula_sum            'C18 H16 Cl2 Hg N2 O6'
_chemical_formula_weight         627.830
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_audit_creation_method           maXus
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.98190(10)
_cell_length_b                   13.5846(2)
_cell_length_c                   16.3968(2)
_cell_measurement_temperature    173
_cell_volume                     2000.66(4)
_computing_data_collection       KappaCCD
_computing_data_reduction
'Denzo and Scalepak (Otwinowski & Minor, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       KappaCCD
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           ' MoK\a'
_diffrn_radiation_wavelength_id  all
_diffrn_reflns_av_R_equivalents  0.0459
_diffrn_reflns_av_sigmaI/netI    0.0420
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            18220
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.59
_exptl_absorpt_coefficient_mu    7.998
_exptl_absorpt_correction_T_max  0.221
_exptl_absorpt_correction_T_min  0.161
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements
Sortav (Blessing 1995)
;
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    2.084
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1200
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.991
_refine_diff_density_min         -0.812
_refine_diff_density_rms         0.098
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.014(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         5820
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0302
_refine_ls_R_factor_gt           0.0262
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w==1/[\s^2^(Fo^2^)+(0.0217P)^2^+0.7769P] where P==(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0570
_refine_ls_wR_factor_ref         0.0582
_reflns_number_gt                5470
_reflns_number_total             5820
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b303238h.txt
_cod_data_source_block           compound
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      'P 21 21 21    '
_cod_original_formula_sum        'C18 H16 Cl2 Hg N2 O6 '
_cod_database_code               7103712