Iterative synthesis of 1,3,5-polyphenylene dendrons via C-H activation.
Finke, Aaron D.; Moore, Jeffrey S.; Organic letters 10 (2008) 4851–4854; doi:10.1021/ol8019605

data_1504922
_publ_contact_author
; 
Scott R. Wilson 
University of Illinois 
School of Chemical Sciences, Box 59-1 
505 South Mathews Avenue 
Urbana, Illinois  61801 
USA 
;
_publ_section_title
;
 Iterative synthesis of 1,3,5-polyphenylene dendrons via C-H activation.
;
_journal_issue                   21
_journal_name_full               'Organic letters'
_journal_page_first              4851
_journal_page_last               4854
_journal_paper_doi               10.1021/ol8019605
_journal_volume                  10
_journal_year                    2008
_chemical_formula_moiety         'C20 H33 B O2'
_chemical_formula_sum            'C20 H33 B O2'
_chemical_formula_weight         316.27
_chemical_name_systematic
; 
? 
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
; 
2008-07-09   text and data added, srw 
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.0312(12)
_cell_length_b                   16.3017(17)
_cell_length_c                   10.8502(12)
_cell_measurement_reflns_used    3306
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      22.05
_cell_measurement_theta_min      2.91
_cell_volume                     1951.2(4)
_computing_cell_refinement       'SAINT V7.23A (Bruker, 2005)'
_computing_data_collection       'APEX2 V2.0-1 (Bruker, 2004)'
_computing_data_reduction
; 
SAINT V7.23A, XPREP V2005/2, SADABS V2007/4, TWINABS V2007/5 
(Bruker, 2005 & 2007) 
;
_computing_molecular_graphics    'SHELXTL V6.12 (Bruker, 2005)'
_computing_publication_material  'XCIF V6.12 (Bruker, 2005)'
_computing_structure_refinement  'SHELXTL V6.12 (Bruker, 2005)'
_computing_structure_solution    'SHELXTL V6.12 (Bruker, 2005)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       'Bruker Kappa/ApexII CCD'
_diffrn_measurement_method       'profile data from \f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_wavelength_id  ba94basx
_diffrn_reflns_av_R_equivalents  0.0528
_diffrn_reflns_av_sigmaI/netI    0.0279
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            24256
_diffrn_reflns_theta_full        25.47
_diffrn_reflns_theta_max         25.47
_diffrn_reflns_theta_min         2.25
_exptl_absorpt_coefficient_mu    0.066
_exptl_absorpt_correction_T_max  0.9971
_exptl_absorpt_correction_T_min  0.9867
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'SHELXTL/XPREP V2005/2 (Bruker, 2005)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.077
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             696
_exptl_crystal_id                ba94basx
_exptl_crystal_preparation
; 
The data crystal was mounted using oil (Parantone-N, Exxon) to a 
0.3 mm cryo-loop (Hampton Research) with the (0 4 3) scattering 
planes roughly normal to the spindle axis. 
;
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.167
_refine_diff_density_min         -0.174
_refine_diff_density_rms         0.031
_refine_ls_extinction_coef       0.0068(13)
_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   1.072
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     186
_refine_ls_number_reflns         1867
_refine_ls_number_restraints     97
_refine_ls_restrained_S_all      1.116
_refine_ls_R_factor_all          0.0743
_refine_ls_R_factor_gt           0.0442
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0498P)^2^+0.6675P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1069
_refine_ls_wR_factor_ref         0.1232
_reflns_number_gt                1274
_reflns_number_total             1867
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol8019605_si_002.cif
_cod_data_source_block           ba94basx
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_Hall     '-P 2ac 2n '
_cod_original_sg_symbol_H-M      'P n m a '
_cod_database_code               1504922