Dynamic Topochemical Reaction Control−A Principle and Its Application inansa-Metallocene Synthesis†
Greger, Ingo; Kehr, Gerald; Fröhlich, Roland; Erker, Gerhard; Organometallics 29 (2010) 3210–; doi:10.1021/om100467y

data_4066457
_publ_section_title
;
 Dynamic Topochemical Reaction Control&#x2212;A Principle and Its
 Application inansa-Metallocene Synthesis&#x2020;
;
_journal_issue                   14
_journal_name_full               Organometallics
_journal_page_first              3210
_journal_paper_doi               10.1021/om100467y
_journal_volume                  29
_journal_year                    2010
_chemical_formula_sum            'C22 H26 Cl2 Hf'
_chemical_formula_weight         539.82
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 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                 103.162(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   27.6120(7)
_cell_length_b                   6.6102(2)
_cell_length_c                   12.0125(3)
_cell_measurement_reflns_used    2086
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.88
_cell_measurement_theta_min      4.08
_cell_volume                     2134.93(10)
_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 0.990
_diffrn_measured_fraction_theta_max 0.990
_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  0.043
_diffrn_reflns_av_sigmaI/netI    0.0445
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -36
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            7802
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         4.10
_exptl_absorpt_coefficient_mu    5.138
_exptl_absorpt_correction_T_max  0.9042
_exptl_absorpt_correction_T_min  0.4264
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, BOrek, Majewski & Minor, 2003)'
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.679
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.246
_refine_diff_density_min         -0.967
_refine_diff_density_rms         0.129
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.496(17)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         3572
_refine_ls_number_restraints     62
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0347
_refine_ls_R_factor_gt           0.0335
_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^)+(0.0261P)^2^+22.0251P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0821
_refine_ls_wR_factor_ref         0.0832
_reflns_number_gt                3477
_reflns_number_total             3572
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om100467y_si_002.cif
_cod_data_source_block           erk5260
_cod_original_sg_symbol_H-M      Cc
_cod_database_code               4066457