A second-order nonlinear optical material with a hydrated homochiral helix obtained via spontaneous symmetric breaking crystallization from an achiral ligand
Qingxiang Yang; Zhijun Chen; Jinsong Hu; Ying Hao; Yizhi Li; Qingyi Lu; Hegen Zheng; Chem.Commun. 49 (2013) 3585–; doi:10.1039/c3cc00299c

data_7109122
_publ_section_title
;
 A second-order nonlinear optical material with a hydrated homochiral
 helix obtained via spontaneous symmetric breaking crystallization from an
 achiral ligand
;
_journal_name_full               Chem.Commun.
_journal_page_first              3585
_journal_paper_doi               10.1039/c3cc00299c
_journal_volume                  49
_journal_year                    2013
_chemical_formula_sum            'C37 H55 Cd2 N5 O19'
_chemical_formula_weight         1098.66
_chemical_name_systematic
;
?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_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                 104.0780(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.6120(10)
_cell_length_b                   16.4062(17)
_cell_length_c                   14.7042(15)
_cell_measurement_temperature    296(2)
_cell_volume                     2249.2(4)
_computing_cell_refinement       'SMART (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SMART (Bruker, 2000)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(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    0.0413
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            16452
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.89
_exptl_absorpt_coefficient_mu    1.026
_exptl_absorpt_correction_T_max  0.8211
_exptl_absorpt_correction_T_min  0.8211
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; Bruker, 2000'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.622
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1120
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.797
_refine_diff_density_min         -0.959
_refine_diff_density_rms         0.133
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     562
_refine_ls_number_reflns         6532
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0358
_refine_ls_R_factor_gt           0.0345
_refine_ls_shift/su_max          0.002
_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^+0.9404P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0986
_refine_ls_wR_factor_ref         0.1107
_reflns_number_gt                6461
_reflns_number_total             6532
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc00299c.txt
_cod_data_source_block           1
_cod_original_sg_symbol_H-M      P21
_cod_database_code               7109122