Spontaneous resolution of a Δ/Λ-chiral-at-metal pseudo-tetrahedral Schiff-base zinc complex to a racemic conglomerate with C–H⋯O organized 41- and 43-helices
Enamullah, Mohammed; Vasylyeva, Vera; Quddus, Mohammad Abdul; Islam, Mohammad Khairul; Höfert, Simon-Patrick; Janiak, Christoph; CrystEngComm 20 (2018) 4724–; doi:10.1039/C8CE00839F

data_7231046
_publ_section_title
;
 Spontaneous resolution of a \D/\L-chiral-at-metal pseudo-tetrahedral
 Schiff-base zinc complex to a racemic conglomerate with C--H&#x22EF;O
 organized 41- and 43-helices
;
_journal_issue                   33
_journal_name_full               CrystEngComm
_journal_page_first              4724
_journal_paper_doi               10.1039/C8CE00839F
_journal_volume                  20
_journal_year                    2018
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C24 H18 N4 O2 Zn1'
_chemical_formula_sum            'C24 H18 N4 O2 Zn'
_chemical_formula_weight         459.81
_chemical_name_systematic
; 
\L-bis[N-2-(pyridyl)salicylaldiminato-\k^2^N,O]zinc(II) 
;
_space_group_IT_number           96
_space_group_name_Hall           'P 4nw 2abw'
_space_group_name_H-M_alt        'P 43 21 2'
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 21 2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-05-20 deposited with the CCDC.
2018-06-29 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.9138(3)
_cell_length_b                   9.9138(3)
_cell_length_c                   21.3276(8)
_cell_measurement_reflns_used    9934
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      64.80
_cell_measurement_theta_min      4.92
_cell_volume                     2096.15(12)
_computing_cell_refinement       'SAINT (Bruker, 2006)'
_computing_data_collection       'APEX2 (Bruker, 2006)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'DIAMOND (Crystal Impact, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.968
_diffrn_measured_fraction_theta_max 0.968
_diffrn_measurement_device_type  'Bruker Kappa APEX-II CCD area detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'multilayer mirror'
_diffrn_radiation_source         'microfocus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0273
_diffrn_reflns_av_sigmaI/netI    0.0123
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            15506
_diffrn_reflns_theta_full        64.80
_diffrn_reflns_theta_max         64.80
_diffrn_reflns_theta_min         4.92
_exptl_absorpt_coefficient_mu    1.862
_exptl_absorpt_correction_T_max  0.6050
_exptl_absorpt_correction_T_min  0.5229
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>SADABS</i>; Sheldrick, 1996)'
_exptl_crystal_colour            yellow-brown
_exptl_crystal_density_diffrn    1.457
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             944
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: ethanol/methanol'
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.135
_refine_diff_density_min         -0.235
_refine_diff_density_rms         0.050
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.143
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     177
_refine_ls_number_reflns         1712
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.143
_refine_ls_R_factor_all          0.0204
_refine_ls_R_factor_gt           0.0203
_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^)+(0.0336P)^2^+0.1977P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0538
_refine_ls_wR_factor_ref         0.0539
_reflns_number_gt                1707
_reflns_number_total             1712
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8ce00839f2.cif
_cod_data_source_block           zns2-4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 7231045--7231052.cif.
;
_cod_original_sg_symbol_H-M      P4(3)2(1)2
_cod_original_formula_sum        'C24 H18 N4 O2 Zn1'
_cod_database_code               7231046