Thermally reversible fluorescent polymorphs of alkoxy-cyano-substituted diphenylbutadienes: role of crystal packing in solid state fluorescence.
Davis, Riju; Rath, Nigam P; Das, Suresh; Chemical communications (Cambridge, England)  (2004) 74–75; doi:10.1039/b311121k

data_7102396
_publ_section_title
;
 Thermally reversible fluorescent polymorphs of
 alkoxy-cyano-substituted diphenylbutadienes: role of crystal packing
 in solid state fluorescence.
;
_journal_issue                   1
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              74
_journal_page_last               75
_journal_paper_doi               10.1039/b311121k
_journal_year                    2004
_chemical_formula_sum            'C25 H29 N O'
_chemical_formula_weight         359.49
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_cell_volume                     2070.5(3)
_computing_cell_refinement       'Bruker SMART'
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_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker-SHELXTL (Sheldrick, 2001)'
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_computing_structure_refinement  'Bruker-SHELXTL (Sheldrick, 2001)'
_computing_structure_solution    'Bruker-SHELXTL (Sheldrick, 2001)'
_diffrn_ambient_temperature      220(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
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_diffrn_radiation_type           MoK\a
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_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.15
_exptl_absorpt_coefficient_mu    0.069
_exptl_absorpt_correction_T_max  0.9945
_exptl_absorpt_correction_T_min  0.9769
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.153
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
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_exptl_crystal_size_min          0.08
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_refine_ls_R_factor_all          0.1320
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_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^)+(0.0515P)^2^+0.1077P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1050
_refine_ls_wR_factor_ref         0.1305
_reflns_number_gt                2193
_reflns_number_total             4072
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b311121k.txt
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_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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:

'_exptl_crystal_density_meas' value 'no' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7102396