Thermal Isomerization of the Buchwald Seven-Membered Zirconacyclocumulene and Its Interaction with Acetylenes. Synthesis and Structures of Novel Seven-Membered Zirconacyclocumulene Complexes
Burlakov, Vladimir V.; Bogdanov, Vyacheslav S.; Arndt, Perdita; Baumann, Wolfgang; Spannenberg, Anke; Lyssenko, Konstantin A.; Ananyev, Ivan V.; Rosenthal, Uwe; Shur, Vladimir B.; Organometallics 34 (2015) 2471–; doi:10.1021/om501205s

data_4085354
_publ_section_title
;
 Thermal Isomerization of the Buchwald Seven-Membered Zirconacyclocumulene
 and Its Interaction with Acetylenes. Synthesis and Structures of Novel
 Seven-Membered Zirconacyclocumulene Complexes
;
_journal_issue                   11
_journal_name_full               Organometallics
_journal_page_first              2471
_journal_paper_doi               10.1021/om501205s
_journal_volume                  34
_journal_year                    2015
_chemical_formula_sum            'C34 H38 Si2 Zr'
_chemical_formula_weight         594.04
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_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                 106.449(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.1543(3)
_cell_length_b                   8.0167(1)
_cell_length_c                   25.2269(4)
_cell_measurement_reflns_used    9160
_cell_measurement_temperature    299(2)
_cell_measurement_theta_max      28.69
_cell_measurement_theta_min      2.50
_cell_volume                     3133.28(9)
_computing_cell_refinement       'SAINT V7.68A (Bruker AXS, 2009)'
_computing_data_collection       'APEX2 V2011.4-1 (Bruker AXS, 2011)'
_computing_data_reduction        'SAINT V7.68A (Bruker AXS, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      299(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Kappa APEX II Duo'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  'curved graphite'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0425
_diffrn_reflns_av_sigmaI/netI    0.0340
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            29898
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.50
_exptl_absorpt_coefficient_mu    0.447
_exptl_absorpt_correction_T_max  0.90
_exptl_absorpt_correction_T_min  0.86
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2008/1 (Bruker AXS)'
_exptl_crystal_colour            red-orange
_exptl_crystal_density_diffrn    1.259
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1240
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.812
_refine_diff_density_min         -0.641
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.104
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     340
_refine_ls_number_reflns         7196
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.104
_refine_ls_R_factor_all          0.0465
_refine_ls_R_factor_gt           0.0358
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0348P)^2^+2.2947P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0813
_refine_ls_wR_factor_ref         0.0865
_reflns_number_gt                6107
_reflns_number_total             7196
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om501205s_si_002.cif
_cod_data_source_block           complex_14
_cod_depositor_comments
'Adding full bibliography for 4085350--4085354.cif.'
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4085354