Second harmonic generation from the `centrosymmetric' crystals
Nalla, Venkatram; Medishetty, Raghavender; Wang, Yue; Bai, Zhaozhi; Sun, Handong; Wei, Ji.; Vittal, Jagadese J.; IUCrJ 2 (2015) 317–321; doi:10.1107/S2052252515002183

data_1542783
_publ_section_title
;
 Second harmonic generation from the `centrosymmetric' crystals
;
_journal_issue                   3
_journal_name_full               IUCrJ
_journal_page_first              317
_journal_page_last               321
_journal_paper_doi               10.1107/S2052252515002183
_journal_volume                  2
_journal_year                    2015
_chemical_formula_sum            'C54 H42 N2 O8 Zn2'
_chemical_formula_weight         977.64
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 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                 108.4920(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   24.525(2)
_cell_length_b                   12.1433(11)
_cell_length_c                   15.4964(14)
_cell_measurement_reflns_used    8646
_cell_measurement_temperature    95(2)
_cell_measurement_theta_max      28.32
_cell_measurement_theta_min      2.17
_cell_volume                     4376.8(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      95(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0245
_diffrn_reflns_av_sigmaI/netI    0.0390
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            15383
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         1.75
_exptl_absorpt_coefficient_mu    1.158
_exptl_absorpt_correction_T_max  0.7529
_exptl_absorpt_correction_T_min  0.5633
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2010)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.484
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             2016
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.26
_refine_diff_density_max         0.718
_refine_diff_density_min         -0.554
_refine_diff_density_rms         0.079
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.37(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     325
_refine_ls_number_reflns         8859
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0419
_refine_ls_R_factor_gt           0.0372
_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^)+(0.0481P)^2^+9.1876P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0966
_refine_ls_wR_factor_ref         0.1012
_reflns_number_gt                7911
_reflns_number_total             8859
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ed5004.cif
_cod_data_source_block           e251
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/current/IUCr/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/data/users/saulius/automatic-downloads/current/IUCr/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 4287 2015-11-16 14:04:37Z antanas 
;
_cod_original_sg_symbol_H-M      Cc
_cod_database_code               1542783
_publcif_datablock.id            {8ca0b96d-9976-4629-9ca5-5ad0475cfbfa}
_publcif_info_exptl_table_max_cols 4
_publcif_info_exptl_table_use_headnotes n