Topochemical Limits for Solid-State Photoreactivity by Fine Tuning of the π-π Interactions
Shi-Yao Yang; Panče Naumov; Shunichi Fukuzumi; Journal of the American Chemical Society 131 (2009) 7247–7249; doi:10.1021/ja902094b

data_4104442
_publ_section_title
;
 Topochemical Limits for Solid-State Photoreactivity by Fine Tuning of the
 \p-\p Interactions
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7247
_journal_page_last               7249
_journal_paper_doi               10.1021/ja902094b
_journal_volume                  131
_journal_year                    2009
_chemical_formula_moiety         'C12 H9 O4, H3 O'
_chemical_formula_sum            'C12 H12 O5'
_chemical_formula_weight         236.22
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           28
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2 -2a'
_symmetry_space_group_name_H-M   'P m a 2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   24.7573(11)
_cell_length_b                   5.6223(2)
_cell_length_c                   3.8806(2)
_cell_measurement_reflns_used    2283
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      22.9641
_cell_measurement_theta_min      3.2915
_cell_volume                     540.15(4)
_computing_cell_refinement       'APEX2 (Bruker, 2006)'
_computing_data_collection       'APEX2 (Bruker, 2006)'
_computing_data_reduction        'SAINT (Bruker, 2003)'
_computing_molecular_graphics    'ORTEP-II (Johnson, 1976)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'APEX2 with CCD detector'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  'Bruker Helios Confocal multilayered mirror'
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0361
_diffrn_reflns_av_sigmaI/netI    0.0224
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       4
_diffrn_reflns_limit_l_min       -4
_diffrn_reflns_number            4582
_diffrn_reflns_theta_full        23.12
_diffrn_reflns_theta_max         23.12
_diffrn_reflns_theta_min         1.65
_exptl_absorpt_coefficient_mu    0.114
_exptl_absorpt_correction_T_max  0.9966
_exptl_absorpt_correction_T_min  0.9809
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.452
_exptl_crystal_description       needle
_exptl_crystal_F_000             248
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.122
_refine_diff_density_min         -0.178
_refine_diff_density_rms         0.032
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.085
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     91
_refine_ls_number_reflns         797
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.0344
_refine_ls_R_factor_gt           0.0297
_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^)+(0.0279P)^2^+0.2334P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0711
_refine_ls_wR_factor_ref         0.0742
_reflns_number_gt                729
_reflns_number_total             797
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja902094b_si_006.cif
_cod_data_source_block           y
_cod_database_code               4104442