Catalytic Formation of Five-Membered Zirconacycloallenoids and Their Reaction with Carbon Dioxide
Podiyanachari, Santhosh Kumar; Bender, Georg; Daniliuc, Constantin G.; Kehr, Gerald; Erker, Gerhard; Organometallics  (2014) 140626102055005–; doi:10.1021/om500399w

data_4083745
_publ_section_title
;
 Catalytic Formation of Five-Membered Zirconacycloallenoids and Their
 Reaction with Carbon Dioxide
;
_journal_name_full               Organometallics
_journal_page_first              140626102055005
_journal_paper_doi               10.1021/om500399w
_journal_year                    2014
_chemical_formula_sum            'C20 H30 Si2 Zr'
_chemical_formula_weight         417.84
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 91.7720(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   13.0703(2)
_cell_length_b                   22.0943(3)
_cell_length_c                   15.1528(2)
_cell_measurement_reflns_used    9917
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      28.28
_cell_measurement_theta_min      4.08
_cell_volume                     4373.72(11)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP (BrukerAXS, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'Montel mirror'
_diffrn_radiation_source         'rotating anode Nonius FR591'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.046
_diffrn_reflns_av_sigmaI/netI    0.0363
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            32095
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         4.13
_exptl_absorpt_coefficient_mu    0.611
_exptl_absorpt_correction_T_max  0.9760
_exptl_absorpt_correction_T_min  0.8876
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.269
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1744
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.500
_refine_diff_density_min         -0.454
_refine_diff_density_rms         0.064
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     465
_refine_ls_number_reflns         8808
_refine_ls_number_restraints     95
_refine_ls_restrained_S_all      1.100
_refine_ls_R_factor_all          0.0516
_refine_ls_R_factor_gt           0.0425
_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^)+(0.0269P)^2^+6.4831P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0949
_refine_ls_wR_factor_ref         0.1006
_reflns_number_gt                7605
_reflns_number_total             8808
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om500399w_si_002.cif
_cod_data_source_block           erk7358
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4083745