Synthesis and Isolation of Di-n-butylhafnocene and Its Application as a Versatile Starting Material for the Synthesis of New Hafnacycles
Burlakov, Vladimir V.; Beweries, Torsten; Bogdanov, Vyacheslav S.; Arndt, Perdita; Baumann, Wolfgang; Petrovskii, Pavel V.; Spannenberg, Anke; Lyssenko, Konstantin A.; Shur, Vladimir B.; Rosenthal, Uwe; Organometallics 28 (2009) 2864–; doi:10.1021/om900122w

data_4069285
_publ_section_title
;
 Synthesis and Isolation of Di-n-butylhafnocene and Its Application as a
 Versatile Starting Material for the Synthesis of New Hafnacycles
;
_journal_issue                   9
_journal_name_full               Organometallics
_journal_page_first              2864
_journal_paper_doi               10.1021/om900122w
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C30 H46 Hf Si4'
_chemical_formula_weight         697.52
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   11.12668(15)
_cell_length_b                   19.9661(4)
_cell_length_c                   30.5895(4)
_cell_measurement_reflns_used    71326
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      27.23
_cell_measurement_theta_min      1.68
_cell_volume                     6795.65(19)
_computing_data_collection       STOE-X-AREA
_computing_molecular_graphics    XP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'STOE IPDS II'
_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  0.0357
_diffrn_reflns_av_sigmaI/netI    0.0182
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            90282
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    3.227
_exptl_absorpt_correction_T_max  0.5177
_exptl_absorpt_correction_T_min  0.3643
_exptl_absorpt_correction_type   numerical
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.364
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2832
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.437
_refine_diff_density_min         -0.798
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.925
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     308
_refine_ls_number_reflns         6674
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.925
_refine_ls_R_factor_all          0.0298
_refine_ls_R_factor_gt           0.0195
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0293P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0429
_refine_ls_wR_factor_ref         0.0446
_reflns_number_gt                5230
_reflns_number_total             6674
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900122w_si_003.cif
_cod_data_source_block           ks849
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               4069285