A combinatorial chemistry approach to new materials for non-linear optics. I. Five Schiff bases
Vladimir N. Nesterov; Tatiana V. Timofeeva; Oleg Ya. Borbulevych; Mikhail Yu. Antipin; Ronald D. Clark; Acta Crystallographica Section C 56 (2000) 971–975; doi:10.1107/S0108270100002845

data_2011193
_publ_section_title
;
 A combinatorial chemistry approach to new materials for non-linear
 optics. I. Five Schiff bases
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              971
_journal_page_last               975
_journal_paper_doi               10.1107/S0108270100002845
_journal_volume                  56
_journal_year                    2000
_chemical_formula_sum            'C18 H19 N3 O2'
_chemical_formula_weight         309.36
_chemical_melting_point          175.0(10)
_chemical_name_systematic
;
N-{(E,2E)-3-[4-(dimethylamino)phenyl]-2-propenylidene}-2-methyl-
-4-nitroaniline
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_audit_creation_method           SHELXL
_cell_angle_alpha                72.95(3)
_cell_angle_beta                 86.13(3)
_cell_angle_gamma                89.81(3)
_cell_formula_units_Z            2
_cell_length_a                   8.438(2)
_cell_length_b                   9.609(2)
_cell_length_c                   10.546(2)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      11
_cell_measurement_theta_min      10
_cell_volume                     815.5(3)
_computing_cell_refinement       'CAD4 Software'
_computing_data_collection       'CAD4 Software (Enraf-Nonius, 1989)'
_computing_data_reduction        'PROFIT (Streltsov & Zavodnik, 1989)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL-Plus (Sheldrick, 1994)'
_diffrn_ambient_temperature      295(2)
_diffrn_measurement_device       'Enraf-Nonius CAD-4'
_diffrn_measurement_method       \q/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_av_R_equivalents  .0860
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_diffrn_standards_decay_%        5
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_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    .084
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.260
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             328
_exptl_crystal_size_max          .40
_exptl_crystal_size_mid          .20
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_refine_diff_density_max         .24
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
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_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.1556P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         .3166
_refine_ls_wR_factor_ref         .2005
_reflns_number_gt                1393
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_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bm1393.cif
_cod_data_source_block           3b
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.1556P)^2^] where P=(Fo^2^+2Fc^2^)/3' was changed
to 'calc'. New tag '_refine_ls_weighting_details' was created. The
value of the new tag was set to 'w = 1/[\s^2^(Fo^2^)+(0.1556P)^2^]
where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               2011193