Generation of Benzocyclobutadiene Derivatives from Zirconaindene Derivatives
Chao Chen; Chanjuan Xi; Yuanyuan Liu; Xiaoyin Hong; Journal of Organic Chemistry 71 (2006) 5373–5376; doi:10.1021/jo060334s

data_4021779
_publ_contact_author
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Dr. Chanjuan Xi
Department of Chemistry, Tsinghua University
Beijing 100084
China
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_publ_section_title
;
 Generation of Benzocyclobutadiene Derivatives from
 Zirconaindene Derivatives
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_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5373
_journal_page_last               5376
_journal_paper_doi               10.1021/jo060334s
_journal_volume                  71
_journal_year                    2006
_chemical_formula_moiety         'C24 H28'
_chemical_formula_sum            'C24 H28'
_chemical_formula_weight         316.46
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                86.753(8)
_cell_angle_beta                 83.833(7)
_cell_angle_gamma                62.065(7)
_cell_formula_units_Z            2
_cell_length_a                   8.5368(8)
_cell_length_b                   8.8167(10)
_cell_length_c                   14.2494(15)
_cell_measurement_reflns_used    45
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      12.50
_cell_measurement_theta_min      2.88
_cell_volume                     942.03(17)
_computing_cell_refinement       XSCANS
_computing_data_collection       'XSCANS (Bruker, 1997)'
_computing_data_reduction        XSCANS
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 1997)'
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\w 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  0.0239
_diffrn_reflns_av_sigmaI/netI    0.0475
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            4243
_diffrn_reflns_theta_full        25.49
_diffrn_reflns_theta_max         25.49
_diffrn_reflns_theta_min         2.61
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.062
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.116
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             344
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.155
_refine_diff_density_min         -0.155
_refine_diff_density_rms         0.032
_refine_ls_extinction_coef       0.0139(11)
_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   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         3490
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0779
_refine_ls_R_factor_gt           0.0487
_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^)+(0.001P)^2^+0.3P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0932
_refine_ls_wR_factor_ref         0.1082
_reflns_number_gt                2172
_reflns_number_total             3490
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo060334ssi20060419_112344.cif
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 
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_cod_database_code               4021779