Characterization of a meso-chiral isomer of a hexanuclear Cu(ii) cage from racemization of the l-alanine Schiff base.
Rajesh, Chinnaiyan Mahalingam; Ray, Manabendra; Dalton transactions (Cambridge, England : 2003) 43 (2014) 12952–; doi:10.1039/c4dt01443j

data_7031503
_publ_section_title
;
 Characterization of a meso-chiral isomer of a hexanuclear Cu(ii) cage
 from racemization of the l-alanine Schiff base.
;
_journal_issue                   34
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              12952
_journal_paper_doi               10.1039/c4dt01443j
_journal_volume                  43
_journal_year                    2014
_chemical_absolute_configuration syn
_chemical_compound_source        synthesized
_chemical_formula_moiety         '2(C30 H28 Cu3 N3 O10), 9(O), N'
_chemical_formula_sum            'C60 H77 Cu6 N7 O29'
_chemical_formula_weight         1741.56
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           148
_symmetry_cell_setting           trigonal
_symmetry_Int_Tables_number      148
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_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                120.00
_cell_formula_units_Z            3
_cell_length_a                   16.4342(9)
_cell_length_b                   16.4342(9)
_cell_length_c                   22.5159(15)
_cell_measurement_reflns_used    1295
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      28.6574
_cell_measurement_theta_min      2.9960
_cell_volume                     5266.4(5)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.20 (release 27-06-2012 CrysAlis171 .NET)
(compiled Jul 11 2012,15:38:31)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.20 (release 27-06-2012 CrysAlis171 .NET)
(compiled Jul 11 2012,15:38:31)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.20 (release 27-06-2012 CrysAlis171 .NET)
(compiled Jul 11 2012,15:38:31)
;
_computing_molecular_graphics    Wingx
_computing_publication_material  Wingx
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector_area_resol_mean 16.2760
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'SuperNova, Single source at offset), Eos'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'SuperNova (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0252
_diffrn_reflns_av_sigmaI/netI    0.0495
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            4611
_diffrn_reflns_theta_full        28.72
_diffrn_reflns_theta_max         28.72
_diffrn_reflns_theta_min         3.00
_exptl_absorpt_coefficient_mu    1.873
_exptl_absorpt_correction_T_max  0.626
_exptl_absorpt_correction_T_min  0.555
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;CrysAlisPro, Agilent Technologies,

Version 1.171.36.20 (release 27-06-2012 CrysAlis171 .NET)

(compiled Jul 11 2012,15:38:31)

Empirical absorption correction using spherical harmonics,

 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.627
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cube
_exptl_crystal_F_000             2613
_exptl_crystal_recrystallization_method
'slow evaporation of reaction mixture  and acetonitrile solution'
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.753
_refine_diff_density_min         -0.333
_refine_diff_density_rms         0.083
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     158
_refine_ls_number_reflns         3043
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0844
_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^)+(0.0785P)^2^+8.0927P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1393
_refine_ls_wR_factor_ref         0.1604
_reflns_number_gt                1808
_reflns_number_total             3043
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c4dt01443j2.cif
_cod_data_source_block           cm311
_cod_depositor_comments
'Adding full bibliography for 7031502--7031504.cif.'
_cod_original_cell_volume        5266.4(8)
_cod_original_sg_symbol_H-M      'R -3'
_cod_database_code               7031503