Tetranuclear Zirconium and Hafnium Polyhydride Complexes Composed of the “CpMH2” Units
Hu, Shaowei; Shima, Takanori; Luo, Yi; Hou, Zhaomin; Organometallics 32 (2013) 2145–; doi:10.1021/om400012a

data_4080460
_publ_section_title
;
 Tetranuclear Zirconium and Hafnium Polyhydride Complexes Composed of the
 &#x201C;CpMH2&#x201D; Units
;
_journal_issue                   7
_journal_name_full               Organometallics
_journal_page_first              2145
_journal_paper_doi               10.1021/om400012a
_journal_volume                  32
_journal_year                    2013
_chemical_formula_sum            'C48 H92 Se Si4 Zr4'
_chemical_formula_weight         1225.42
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 110.088(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   23.090(5)
_cell_length_b                   12.098(3)
_cell_length_c                   24.031(5)
_cell_measurement_reflns_used    16105
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.03
_cell_measurement_theta_min      1.80
_cell_volume                     6305(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0503
_diffrn_reflns_av_sigmaI/netI    0.0960
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            16105
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.80
_exptl_absorpt_coefficient_mu    1.322
_exptl_absorpt_correction_T_max  0.9368
_exptl_absorpt_correction_T_min  0.6925
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red-brown
_exptl_crystal_density_diffrn    1.291
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2520
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.05
_platon_squeeze_details
;
;
_refine_diff_density_max         0.696
_refine_diff_density_min         -0.508
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.201
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     297
_refine_ls_number_reflns         5563
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.201
_refine_ls_R_factor_all          0.0610
_refine_ls_R_factor_gt           0.0343
_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 
 [0.00000+1.00000exp(3.00(sin\q/\l)^2^)]/ 
   [\s^2^(Fo^2^)+0.0000+0.0000*P+(0.0000P)^2^+0.0000sin\q/\l] 
 where P = 0.33333Fo^2^ + 0.66667Fc^2^ 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0573
_refine_ls_wR_factor_ref         0.0597
_reflns_number_gt                3521
_reflns_number_total             5563
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400012a_si_002.cif
_cod_data_source_block           4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4080460