Bridged triphenylamine-based dendrimers: tuning enhanced two-photon absorption performance with locked molecular planarity.
Fang, Zhen; Teo, Tang-Lin; Cai, Liping; Lai, Yee-Hing; Samoc, Anna; Samoc, Marek; Organic letters 11 (2009) 1–4; doi:10.1021/ol801238n

data_1503710
_publ_section_title
;
 Bridged triphenylamine-based dendrimers: tuning enhanced two-photon
 absorption performance with locked molecular planarity.
;
_journal_issue                   1
_journal_name_full               'Organic letters'
_journal_page_first              1
_journal_page_last               4
_journal_paper_doi               10.1021/ol801238n
_journal_volume                  11
_journal_year                    2009
_chemical_formula_sum            'C27 H27 N'
_chemical_formula_weight         365.50
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.0680(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   9.8160(5)
_cell_length_b                   18.6778(9)
_cell_length_c                   21.7184(10)
_cell_measurement_reflns_used    2548
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      22.23
_cell_measurement_theta_min      2.17
_cell_volume                     3981.9(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_av_R_equivalents  0.0555
_diffrn_reflns_av_sigmaI/netI    0.0535
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            22962
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.44
_exptl_absorpt_coefficient_mu    0.070
_exptl_absorpt_correction_T_max  0.9944
_exptl_absorpt_correction_T_min  0.9835
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Sadabs, (Sheldrick 2001)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.219
_exptl_crystal_density_meas      1.219
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1568
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.395
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.105
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     517
_refine_ls_number_reflns         7020
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.105
_refine_ls_R_factor_all          0.1472
_refine_ls_R_factor_gt           0.1234
_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^)+(0.0761P)^2^+16.1873P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2945
_refine_ls_wR_factor_ref         0.3063
_reflns_number_gt                5329
_reflns_number_total             7020
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol801238n_si_001.cif
_cod_data_source_block           6378
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1503710