X-ray Diffraction Analysis of Nonequilibrium States in Crystals: Observation of an Unstable Conformer in Flash-Cooled Crystals
Jun Harada; Keiichiro Ogawa; Journal of the American Chemical Society 126 (2004) 3539–3544; doi:10.1021/ja038203l

data_4112341
_publ_section_title
;
 X-ray Diffraction Analysis of Nonequilibrium States in Crystals:
 Observation of an Unstable Conformer in Flash-Cooled Crystals
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              3539
_journal_page_last               3544
_journal_paper_doi               10.1021/ja038203l
_journal_volume                  126
_journal_year                    2004
_chemical_formula_sum            'C14 H12'
_chemical_formula_weight         180.24
_chemical_melting_point          398
_chemical_name_common            (E)-stilbene
_chemical_name_systematic
; 
(E)-1,2-diphenylethene
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   geom
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 112.0400(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.2735(6)
_cell_length_b                   5.6572(3)
_cell_length_c                   15.4399(7)
_cell_measurement_reflns_used    4408
_cell_measurement_temperature    90
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.7
_cell_volume                     993.71(8)
_computing_cell_refinement       'SAINT (Bruker, 1998)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1997)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      90
_diffrn_detector_area_resol_mean 8.192
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD diffractometer'
_diffrn_measurement_method       \w_scan
_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  0.0101
_diffrn_reflns_av_sigmaI/netI    0.0071
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            12433
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         2.85
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_T_max  0.974550
_exptl_absorpt_correction_T_min  0.876203
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.205
_exptl_crystal_description       block
_exptl_crystal_F_000             384
_exptl_crystal_size_max          0.80
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.387
_refine_diff_density_min         -0.325
_refine_diff_density_rms         0.040
_refine_ls_extinction_coef       0.040(4)
_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   1.079
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     150
_refine_ls_number_reflns         2284
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.089
_refine_ls_R_factor_all          0.0421
_refine_ls_R_factor_gt           0.0395
_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^)+(0.0474P)^2^+0.4503P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1035
_refine_ls_wR_factor_ref         0.1059
_reflns_number_gt                2119
_reflns_number_total             2284
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja038203lsi20030829_041253.cif
_cod_data_source_block           est90k1
_cod_database_code               4112341