Design of UV-Absorbing Donor Molecules for Nearly Imperceptible Organic Solar Cells
Ball, Melissa L.; Burlingame, Quinn; Smith, Hannah L.; Liu, Tianran; Parkin, Sean R.; Kahn, Antoine; Loo, Yueh-Lin; ACS Energy Letters  (2021) 180–188; doi:10.1021/acsenergylett.1c02244

data_4519261
_publ_section_title
;
 Design of UV-Absorbing Donor Molecules for Nearly Imperceptible Organic
 Solar Cells
;
_journal_name_full               'ACS Energy Letters'
_journal_page_first              180
_journal_page_last               188
_journal_paper_doi               10.1021/acsenergylett.1c02244
_journal_year                    2021
_chemical_formula_moiety         'C56 H44 N2'
_chemical_formula_sum            'C56 H44 N2'
_chemical_formula_weight         744.93
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_cell_angle_alpha                107.199(1)
_cell_angle_beta                 95.614(1)
_cell_angle_gamma                103.637(1)
_cell_formula_units_Z            1
_cell_length_a                   8.9703(2)
_cell_length_b                   10.4841(3)
_cell_length_c                   11.6663(2)
_cell_measurement_reflns_used    9996
_cell_measurement_temperature    90.0(2)
_cell_measurement_theta_max      27.49
_cell_measurement_theta_min      2.31
_cell_volume                     1001.83(4)
_computing_cell_refinement       '<i>APEX3</i> (Bruker-AXS, 2016)'
_computing_data_collection       '<i>APEX3</i> (Bruker-AXS, 2016)'
_computing_data_reduction        '<i>APEX3</i> (Bruker-AXS, 2016)'
_computing_molecular_graphics    '<i>XP in SHELXTL</i> (Sheldrick, 2008)'
_computing_publication_material
'<i>SHELX</i> (Sheldrick, 2008) and <i>CIFFIX</i> (Parkin, 2013)'
_computing_structure_refinement  '<i>SHELXL-2018/3</i> (Sheldrick, 2015b)'
_computing_structure_solution    '<i>SHELXT</i> (Sheldrick, 2015a)'
_diffrn_ambient_temperature      90.0(2)
_diffrn_detector_area_resol_mean 7.41
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker D8 Venture dual source'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0590
_diffrn_reflns_av_unetI/netI     0.0219
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            64448
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.505
_diffrn_reflns_theta_min         2.117
_diffrn_source                   microsource
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  0.971
_exptl_absorpt_correction_T_min  0.879
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '<i>SADABS</i> (Krause et al., 2015)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.235
_exptl_crystal_description       block
_exptl_crystal_F_000             394
_exptl_crystal_size_max          0.260
_exptl_crystal_size_mid          0.220
_exptl_crystal_size_min          0.180
_refine_diff_density_max         0.206
_refine_diff_density_min         -0.192
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     264
_refine_ls_number_reflns         4586
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0406
_refine_ls_R_factor_gt           0.0334
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0461P)^2^+0.1617P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0861
_refine_ls_wR_factor_ref         0.0898
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3890
_reflns_number_total             4586
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            nz1c02244_si_002.cif
_cod_data_source_block           m21015
_cod_database_code               4519261
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.982
_shelx_estimated_absorpt_t_max   0.987
_exptl_absorpt_special_details
; 
In addition to absorption, multi-scan techniques also correct other slowly 
varying changes in scale factor over reciprocal space, such as those caused 
by X-ray beam inhomogeneity, goniometer imperfection, crystal decomposition, 
crystal longer than the X-ray beam cross section, absorption by the crystal 
mount etc.  These account, by and large, for much of the difference between 
estimated values of Tmin and Tmax and the _exptl_absorpt_correction_ values. 
;
_shelx_res_checksum              80842
_shelx_hkl_checksum              71610