Integrated Molecular Chirality, Absolute Helicity, and Intrinsic Chiral Topology in Three-Dimensional Open-Framework Materials
Jian Zhang; Shumei Chen; Areg Zingiryan; Xianhui Bu; Journal of the American Chemical Society 130 (2008) 17246–17247; doi:10.1021/ja8075692

data_4108895
_publ_contact_author_address
;
Department of Chemistry and Biochemistry
California State University, Long Beach
1250 Bellflower Boulevard, Long Beach, CA 90840
;
_publ_contact_author_email       xbu@csulb.edu
_publ_contact_author_name        'Xianhui Bu'
_publ_section_title
;
 Integrated Molecular Chirality, Absolute Helicity, and Intrinsic Chiral
 Topology in Three-Dimensional Open-Framework Materials
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              17246
_journal_page_last               17247
_journal_paper_doi               10.1021/ja8075692
_journal_volume                  130
_journal_year                    2008
_chemical_formula_sum            'C4 H10 Mg O8'
_chemical_formula_weight         210.43
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           78
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4cw'
_symmetry_space_group_name_H-M   'P 43'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.943
_cell_length_b                   7.943
_cell_length_c                   12.8125(2)
_cell_measurement_reflns_used    1710
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.99
_cell_measurement_theta_min      3.02
_cell_volume                     808.357(13)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_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  'CCD area detector'
_diffrn_measurement_method       'phi and 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  0.0286
_diffrn_reflns_av_sigmaI/netI    0.0259
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            2181
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    0.236
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.729
_exptl_crystal_F_000             440
_refine_diff_density_max         0.788
_refine_diff_density_min         -0.561
_refine_diff_density_rms         0.084
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.10(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     113
_refine_ls_number_reflns         940
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0465
_refine_ls_R_factor_gt           0.0460
_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^)+(0.0943P)^2^+0.9959P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1261
_refine_ls_wR_factor_ref         0.1271
_reflns_number_gt                923
_reflns_number_total             940
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja8075692_si_001_6.cif
_cod_data_source_block           5
_cod_original_cell_volume        808.355(13)
_cod_database_code               4108895