Structure-Mechanochemical Activity Relationships for Cyclobutane Mechanophores
Matthew J. Kryger; Alexander M. Munaretto; Jeffrey S. Moore; Journal of the American Chemical Society 133 (2011) 18992–18998; doi:10.1021/ja2086728

data_4107147
_publ_section_title
;
 Structure-Mechanochemical Activity Relationships for Cyclobutane
 Mechanophores
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              18992
_journal_page_last               18998
_journal_paper_doi               10.1021/ja2086728
_journal_volume                  133
_journal_year                    2011
_chemical_formula_moiety         'C10 H10 N2 O4'
_chemical_formula_sum            'C10 H10 N2 O4'
_chemical_formula_weight         222.20
_chemical_name_systematic
; 
? 
;
_space_group_IT_number           60
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
; 
2008-07-21   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                   11.6500(4)
_cell_length_b                   5.8419(3)
_cell_length_c                   15.9102(7)
_cell_measurement_reflns_used    3338
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      27.88
_cell_measurement_theta_min      3.50
_cell_volume                     1082.82(8)
_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 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  ba13cas
_diffrn_reflns_av_R_equivalents  0.0261
_diffrn_reflns_av_sigmaI/netI    0.0156
_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       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            10025
_diffrn_reflns_theta_full        28.40
_diffrn_reflns_theta_max         28.40
_diffrn_reflns_theta_min         3.10
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_T_max  0.9923
_exptl_absorpt_correction_T_min  0.9560
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'SHELXTL/XPREP V2005/2 (Bruker, 2005)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.363
_exptl_crystal_description       tabular
_exptl_crystal_F_000             464
_exptl_crystal_id                ba13cas
_exptl_crystal_preparation
; 
The data crystal was mounted using oil (Parantone-N, Exxon) to a 
0.3 mm cryo-loop (Hampton Research) with the (-1 0 0) scattering 
planes roughly normal to the spindle axis. 
;
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.51
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.338
_refine_diff_density_min         -0.221
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     93
_refine_ls_number_reflns         1352
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0428
_refine_ls_R_factor_gt           0.0364
_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^)+(0.0603P)^2^+0.3992P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0912
_refine_ls_wR_factor_ref         0.0974
_reflns_number_gt                1149
_reflns_number_total             1352
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja2086728_si_002.cif
_cod_data_source_block           ba13cas
_cod_original_sg_symbol_Hall     '-P 2n 2ab '
_cod_original_sg_symbol_H-M      'P b c n '
_cod_database_code               4107147