The influence of crystal packing on the solid state fluorescence behavior of alkyloxy substituted phenyleneethynylenes
Thomas, Reji; Varghese, Shinto; Kulkarni, G. U.; Journal of Materials Chemistry 19 (2009) 4401–; doi:10.1039/b902937k

data_7201005
_publ_section_title
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 The influence of crystal packing on the solid state fluorescence
 behavior of alkyloxy substituted phenyleneethynylenes
;
_journal_issue                   25
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              4401
_journal_paper_doi               10.1039/b902937k
_journal_volume                  19
_journal_year                    2009
_chemical_formula_sum            'C26 H22 O2'
_chemical_formula_weight         366.44
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 109.434(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.0543(5)
_cell_length_b                   11.0691(4)
_cell_length_c                   15.2735(5)
_cell_measurement_reflns_used    110
_cell_measurement_temperature    571(2)
_cell_measurement_theta_max      25.5
_cell_measurement_theta_min      2.5
_cell_volume                     2081.27(13)
_computing_cell_refinement       HKL
_computing_data_collection       Bruker-Nonius
_computing_data_reduction        HKL
_computing_molecular_graphics    'Mercury (CCDC.cam.ac.uk)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      571(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker-Nonius-Kappa CCD diffractometer'
_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  0.0394
_diffrn_reflns_av_sigmaI/netI    0.0299
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            12036
_diffrn_reflns_theta_full        25.69
_diffrn_reflns_theta_max         25.69
_diffrn_reflns_theta_min         2.56
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.169
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Rods
_exptl_crystal_F_000             776
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.120
_refine_diff_density_min         -0.154
_refine_diff_density_rms         0.033
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     171
_refine_ls_number_reflns         1965
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0787
_refine_ls_R_factor_gt           0.0432
_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^)+(0.0691P)^2^+0.1864P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1097
_refine_ls_wR_factor_ref         0.1283
_reflns_number_gt                1287
_reflns_number_total             1965
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b902937k.txt
_cod_data_source_block           tryb
_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 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7201005