Crystal structures, photophysical properties and significantly different two-photon excited fluorescence of the trans- and cis-oligo(phenylene vinylene)
Liu, Zhaodi; Zhang, Ruilong; Zhang, Qiong; Ding, Hongjuan; Wang, Chuankui; Li, Shengli; Zhou, Hongping; Zhang, Shengyi; Wu, Jieying; Tian, Yupeng; RSC Adv. 4 (2014) 2620–; doi:10.1039/C3RA43126F

data_7239154
_publ_section_title
;
 Crystal structures, photophysical properties and significantly different
 two-photon excited fluorescence of the trans- and cis-oligo(phenylene
 vinylene)
;
_journal_issue                   6
_journal_name_full               'RSC Adv.'
_journal_page_first              2620
_journal_paper_doi               10.1039/C3RA43126F
_journal_volume                  4
_journal_year                    2014
_chemical_formula_sum            'C30 H36 N2 O2'
_chemical_formula_weight         456.61
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 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                 104.566(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.2930(15)
_cell_length_b                   14.162(2)
_cell_length_c                   10.4495(18)
_cell_measurement_temperature    296(2)
_cell_volume                     1331.0(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0238
_diffrn_reflns_av_sigmaI/netI    0.0313
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            6620
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.01
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  0.9929
_exptl_absorpt_correction_T_min  0.9860
_exptl_crystal_density_diffrn    1.139
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             492
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.424
_refine_diff_density_min         -0.302
_refine_diff_density_rms         0.048
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0(2)
_refine_ls_extinction_coef       0.027(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     318
_refine_ls_number_reflns         4008
_refine_ls_number_restraints     40
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0718
_refine_ls_R_factor_gt           0.0665
_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^)+(0.1381P)^2^+0.2472P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1950
_refine_ls_wR_factor_ref         0.2037
_reflns_number_gt                3614
_reflns_number_total             4008
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ra43126f.txt
_cod_data_source_block           110520_dimei_0m
_cod_original_cell_volume        1331.1(4)
_cod_database_code               7239154