Control of the Intramolecular [2+2] Photocycloaddition in a Bis-Stilbene Macrocycle
Yuewen Xu; Mark D. Smith; Jeanette A. Krause; Linda S. Shimizu; Journal of Organic Chemistry 74 (2009) 4874–4877; doi:10.1021/jo900443e

data_4024602
_publ_section_title
;
Control of the Intramolecular [2+2] Photocycloaddition in a Bis-Stilbene
Macrocycle
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              4874
_journal_page_last               4877
_journal_paper_doi               10.1021/jo900443e
_journal_volume                  74
_journal_year                    2009
_chemical_formula_moiety         'C34 H32 N4 O2'
_chemical_formula_sum            'C34 H32 N4 O2'
_chemical_formula_weight         528.64
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            4
_cell_length_a                   14.0071(18)
_cell_length_b                   9.1925(12)
_cell_length_c                   22.496(3)
_cell_measurement_reflns_used    1035
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      20.805
_cell_measurement_theta_min      2.801
_cell_volume                     2896.6(6)
_computing_cell_refinement       'SAINT-Plus Version 6.45 (Bruker, 2001)'
_computing_data_collection       'SMART Version 5.625 (Bruker, 2001)'
_computing_data_reduction        'SAINT-Plus Version 6.45 (Bruker, 2001)'
_computing_molecular_graphics    various
_computing_publication_material  'SHELXTL Version 6.14 (Bruker, 2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       'omega scans'
_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  0.1312
_diffrn_reflns_av_sigmaI/netI    0.0876
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            20001
_diffrn_reflns_theta_full        22.54
_diffrn_reflns_theta_max         22.54
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.212
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1120
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.155
_refine_diff_density_min         -0.134
_refine_diff_density_rms         0.033
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.805
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     189
_refine_ls_number_reflns         1897
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.805
_refine_ls_R_factor_all          0.0860
_refine_ls_R_factor_gt           0.0388
_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^)+(0.0259P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0696
_refine_ls_wR_factor_ref         0.0809
_reflns_number_gt                1080
_reflns_number_total             1897
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo900443e_si_003.cif
_cod_data_source_block           yx01028a
_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_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               4024602