Heats of Formation of [2.2]Paracyclophane-1-ene and [2.2]Paracyclophane-1,9-diene - An Experimental Study
Armin de Meijere; Sergei I. Kozhushkov; Karsten Rauch; Heiko Schill; Sergey P. Verevkin; Martin Kümmerlin; Hans-Dieter Beckhaus; Christoph Rüchardt; Dmitrii S. Yufit; Journal of the American Chemical Society 125 (2003) 15110–15113; doi:10.1021/ja0374628

data_4114465
_publ_section_title
;
 Heats of Formation of [2.2]Paracyclophane-1-ene and
 [2.2]Paracyclophane-1,9-diene - An Experimental Study
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15110
_journal_page_last               15113
_journal_paper_doi               10.1021/ja0374628
_journal_volume                  125
_journal_year                    2003
_chemical_formula_moiety         'C16 H14'
_chemical_formula_sum            'C16 H14'
_chemical_formula_weight         206.27
_chemical_melting_point          470(1)
_chemical_name_common            '[2.2]paracyclophane-1-ene'
_chemical_name_systematic
;
tricyclo[8.2.2.2^4,7^]hexadeca-1(13),2,4(16),5,7(15),10(14),11-
heptaene
;
_space_group_IT_number           69
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-F 2 2'
_symmetry_space_group_name_H-M   'F m m m'
_atom_sites_solution_hydrogens   difmap
_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            12
_cell_length_a                   10.7675(8)
_cell_length_b                   11.1550(8)
_cell_length_c                   27.708(2)
_cell_measurement_reflns_used    1276
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.91
_cell_measurement_theta_min      3.43
_cell_volume                     3328.0(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELX-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART CCD 6000'
_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  0.0547
_diffrn_reflns_av_sigmaI/netI    0.0412
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            7172
_diffrn_reflns_theta_full        29.00
_diffrn_reflns_theta_max         29.00
_diffrn_reflns_theta_min         2.73
_exptl_absorpt_coefficient_mu    0.069
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.235
_exptl_crystal_description       prism
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.179
_refine_diff_density_min         -0.229
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     90
_refine_ls_number_reflns         1246
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.0812
_refine_ls_R_factor_gt           0.0453
_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^)+(0.0750P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1150
_refine_ls_wR_factor_ref         0.1401
_reflns_number_gt                742
_reflns_number_total             1246
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0374628si20030731_044259.cif
_cod_data_source_block           dsk73rt
_cod_database_code               4114465