Two New Polymorphs of the Organic Semiconductor 9,10-Diphenylanthracene: Raman and X-ray Analysis
Salzillo, Tommaso; Della Valle, Raffaele Guido; Venuti, Elisabetta; Brillante, Aldo; Siegrist, Theo; Masino, Matteo; Mezzadri, Francesco; Girlando, Alberto; The Journal of Physical Chemistry C 120 (2016) 1831–; doi:10.1021/acs.jpcc.5b11115

data_1554067
_publ_section_title
;
 Two New Polymorphs of the Organic Semiconductor 9,10-Diphenylanthracene:
 Raman and X-ray Analysis
;
_journal_issue                   3
_journal_name_full               'The Journal of Physical Chemistry C'
_journal_page_first              1831
_journal_paper_doi               10.1021/acs.jpcc.5b11115
_journal_volume                  120
_journal_year                    2016
_chemical_compound_source        9,10-Diphenilanthracene
_chemical_formula_moiety         'C26 H18'
_chemical_formula_sum            'C26 H18'
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_space_group_IT_number           14
_space_group_name_Hall           '-P 2yab'
_space_group_name_H-M_alt        'P 1 21/a 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
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_cell_angle_beta                 112.802(9)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.4528(9)
_cell_length_b                   20.3370(19)
_cell_length_c                   10.0264(9)
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_cell_measurement_temperature    200
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     1776.9(3)
_computing_cell_refinement       'USER DEFINED CELL REFINEMENT'
_computing_data_collection       'USER DEFINED DATA COLLECTION'
_computing_data_reduction        'USER DEFINED DATA REDUCTION'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'USER DEFINED STRUCTURE SOLUTION'
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_diffrn_measured_fraction_theta_max 0.945
_diffrn_measurement_device_type  Unknown
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
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_diffrn_reflns_theta_min         2.979
_diffrn_standards_number         0
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_exptl_absorpt_correction_T_max  1.0000
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_refine_diff_density_min         -0.19
_refine_ls_extinction_method     None
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
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_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982) 
 [weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)] 
 where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax 
 Method = Robust Weighting (Prince, 1982) 
 W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^ 
 A~i~ are: 
 151. 111. 115. 16.9 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0777
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_reflns_limit_h_max              12
_reflns_limit_h_min              -13
_reflns_limit_k_max              29
_reflns_limit_k_min              0
_reflns_limit_l_max              14
_reflns_limit_l_min              0
_reflns_number_gt                2368
_reflns_number_total             5253
_reflns_threshold_expression     I>0.5\s(I)
_oxford_diffrn_Wilson_B_factor   0.00
_oxford_diffrn_Wilson_scale      0.00
_oxford_refine_ls_scale          1.922(8)
_oxford_structure_analysis_title CRYSTALS_cif
_cod_data_source_file            jp5b11115_si_002.cif
_cod_data_source_block           CRYSTALS_cif
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      'P 1 21/a 1 '
_cod_database_code               1554067