Reversible Photoswitching of the Coordination Numbers of Silicon in Organosilicon Compounds Bearing a 2-(Phenylazo)phenyl Group
Naokazu Kano; Fuminori Komatsu; Masaki Yamamura; Takayuki Kawashima; Journal of the American Chemical Society 128 (2006) 7097–7109; doi:10.1021/ja060926s

data_4110612
_publ_contact_author_address
;
Department of Chemistry, Graduate School of Science,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
;
_publ_contact_author_email       takayuki@chem.s.u-tokyo.ac.jp
_publ_contact_author_fax         +81-5800-6899
_publ_contact_author_name        'Takayuki Kawashima'
_publ_contact_author_phone       +81-5800-6899
_publ_section_title
;
 Reversible Photoswitching of the Coordination Numbers of Silicon in
 Organosilicon Compounds Bearing a 2-(Phenylazo)phenyl Group
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7097
_journal_page_last               7109
_journal_paper_doi               10.1021/ja060926s
_journal_volume                  128
_journal_year                    2006
_chemical_formula_moiety         'C25 H22 N2 Si'
_chemical_formula_sum            'C25 H22 N2 Si'
_chemical_formula_weight         378.54
_chemical_melting_point          388(1)
_chemical_name_common            Methyldiphenylsilane
_chemical_name_systematic
; 
Methyldiphenyl[2-(phenylazo)phenyl]silane
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                103.468(8)
_cell_angle_beta                 90.715(7)
_cell_angle_gamma                102.807(8)
_cell_formula_units_Z            4
_cell_length_a                   9.940(6)
_cell_length_b                   12.243(8)
_cell_length_c                   17.692(11)
_cell_measurement_reflns_used    7060
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.4835
_cell_measurement_theta_min      3.0402
_cell_volume                     2037(2)
_computing_cell_refinement       'CrystalClear (Rigaku Corp., 2000)'
_computing_data_collection       'CrystalClear (Rigaku Corp., 2000)'
_computing_data_reduction        'CrystalClear (Rigaku Corp., 2000)'
_computing_molecular_graphics
'ORTEP-3 for Windows ver 1.08 (Farrugia, 1997-2005)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 14.5666
_diffrn_measured_fraction_theta_full 0.969
_diffrn_measured_fraction_theta_max 0.969
_diffrn_measurement_details
;
scan:
    Number of images: 600
               Slice: -70.0000 - 110.0000
         Image width: 0.3000
            Exp time: 25.0000
       Rotation axis: Omega
               Omega: 0.0000
                 Chi: 45.0000
                 Phi: 0.0000
                 XTD: 44.9407
              2theta: 19.8407
scan:
    Number of images: 600
               Slice: -70.0000 - 110.0000
         Image width: 0.3000
            Exp time: 25.0000
       Rotation axis: Omega
               Omega: 0.0000
                 Chi: 45.0000
                 Phi: 90.0000
                 XTD: 44.9407
              2theta: 19.8407

;
_diffrn_measurement_device
;
Mercury CCD (2x2 bin mode)
;
_diffrn_measurement_device_details
;
AFC8: Eulerian 3-circle
;
_diffrn_measurement_method       dtprofit.ref
_diffrn_orient_matrix_type       d*Trek
_diffrn_orient_matrix_UB_11      0.0526
_diffrn_orient_matrix_UB_12      0.0760
_diffrn_orient_matrix_UB_13      0.0463
_diffrn_orient_matrix_UB_21      0.0694
_diffrn_orient_matrix_UB_22      0.0098
_diffrn_orient_matrix_UB_23      -0.0504
_diffrn_orient_matrix_UB_31      -0.0163
_diffrn_orient_matrix_UB_32      0.0403
_diffrn_orient_matrix_UB_33      -0.0388
_diffrn_radiation_detector       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0162
_diffrn_reflns_av_sigmaI/netI    0.0364
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            13084
_diffrn_reflns_reduction_process 'Lp corrections applied'
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.04
_diffrn_source_current           40.0000
_diffrn_source_power             2.0000
_diffrn_source_voltage           50.0000
_exptl_absorpt_coefficient_mu    0.128
_exptl_absorpt_correction_T_max  0.9873
_exptl_absorpt_correction_T_min  0.9103
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Jacobson, R. (1998) Private communication
;
_exptl_crystal_colour            Orange
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_description       Block
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.294
_refine_diff_density_min         -0.270
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     507
_refine_ls_number_reflns         6955
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0393
_refine_ls_R_factor_gt           0.0347
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0455P)^2^+0.7489P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0913
_refine_ls_wR_factor_ref         0.0978
_reflns_number_gt                6149
_reflns_number_total             6955
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja060926ssi20060208_062246.cif
_cod_data_source_block           E2c
_cod_database_code               4110612