A Series of Chiral Metal‒Organic Frameworks Based on Oxalyl Retro-Peptides: Synthesis, Characterization, Dichroism Spectra, and Gas Adsorption
Lin, Lang; Yu, Rongmin; Yang, Wenbin; Wu, Xiao-Yuan; Lu, Can-Zhong; Crystal Growth & Design 12 (2012) 3304–; doi:10.1021/cg300440t

data_4506323
_publ_section_title
;
 A Series of Chiral Metal--Organic Frameworks Based on Oxalyl
 Retro-Peptides: Synthesis, Characterization, Dichroism Spectra, and Gas
 Adsorption
;
_journal_issue                   6
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3304
_journal_paper_doi               10.1021/cg300440t
_journal_volume                  12
_journal_year                    2012
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C18 H22 Cu2 N6 O6, 2(O)'
_chemical_formula_sum            'C18 H22 Cu2 N6 O8'
_chemical_formula_weight         577.50
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           18
_space_group_name_Hall           'P 2 2ab'
_symmetry_space_group_name_Hall  'P 2 2ab'
_symmetry_space_group_name_H-M   'P 21 21 2'
_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                   10.7957(6)
_cell_length_b                   26.9671(17)
_cell_length_c                   9.6972(4)
_cell_measurement_temperature    173(2)
_cell_volume                     2823.1(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.963
_diffrn_measured_fraction_theta_max 0.963
_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  0.0261
_diffrn_reflns_av_sigmaI/netI    0.0270
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            21462
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.62
_exptl_absorpt_coefficient_mu    1.553
_exptl_absorpt_correction_T_max  0.8859
_exptl_absorpt_correction_T_min  0.8356
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.359
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1176
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.142
_refine_diff_density_min         -0.468
_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   0.02(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     302
_refine_ls_number_reflns         6210
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0475
_refine_ls_R_factor_gt           0.0422
_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^)+(0.0833P)^2^+2.0043P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1334
_refine_ls_wR_factor_ref         0.1407
_reflns_number_gt                5484
_reflns_number_total             6210
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg300440t_si_002.cif
_cod_data_source_block           compoundD-1
_cod_database_code               4506323