Infinite chiral single-helical structures formed by the self-assembly of Cu(ii)-N-(2-pyridylmethyl)-aspartate complexes
Wu, Shu-Pao; Lee, Chih-Hao; CrystEngComm 11 (2009) 219–; doi:10.1039/b817157m

data_7200511
_publ_section_title
;
 Infinite chiral single-helical structures formed by the self-assembly
 of Cu(ii)-N-(2-pyridylmethyl)-aspartate complexes
;
_journal_issue                   2
_journal_name_full               CrystEngComm
_journal_page_first              219
_journal_paper_doi               10.1039/b817157m
_journal_volume                  11
_journal_year                    2009
_chemical_absolute_configuration rm
_chemical_formula_sum            'C10 H20 Cu N2 O9'
_chemical_formula_weight         375.82
_chemical_name_systematic
;
?
;
_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'
_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                   8.5157(3)
_cell_length_b                   10.8984(3)
_cell_length_c                   17.6615(6)
_cell_measurement_reflns_used    2770
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      2.5
_cell_volume                     1639.12(9)
_computing_cell_refinement       'Bruker APEXII'
_computing_data_collection       'Bruker APEXII'
_computing_data_reduction        'Bruker Saint'
_computing_molecular_graphics    'Bruker Shelxtl'
_computing_publication_material  'Bruker Shelxtl'
_computing_structure_refinement  'Shelxtl-97 (Sheldrick, 2000)'
_computing_structure_solution    'Shelxtl-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0370
_diffrn_reflns_av_sigmaI/netI    0.0562
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            8932
_diffrn_reflns_theta_full        28.31
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         2.20
_exptl_absorpt_coefficient_mu    1.376
_exptl_absorpt_correction_T_max  0.95032
_exptl_absorpt_correction_T_min  0.76418
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            Blue
_exptl_crystal_density_diffrn    1.523
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       Tabullar
_exptl_crystal_F_000             780
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.151
_refine_diff_density_min         -1.182
_refine_diff_density_rms         0.425
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.02(3)
_refine_ls_extinction_coef       0.083(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.103
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         4071
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.103
_refine_ls_R_factor_all          0.0728
_refine_ls_R_factor_gt           0.0522
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0920P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1227
_refine_ls_wR_factor_ref         0.1657
_reflns_number_gt                3075
_reflns_number_total             4071
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b817157m.txt
_cod_data_source_block           L-pasp
_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      P2(1)2(1)2(1)
_cod_database_code               7200511