Convenient Access to Homo- and Heterobimetallic Alkoxo Hydridozinc Clusters of Formula [(HZnOtBu)4-n(LiOtBu)n] (n= 0, 1, 2, 3)
Marciniak, Wojciech; Merz, Klaus; Moreno, Mariluna; Driess, Matthias; Organometallics 25 (2006) 4931–; doi:10.1021/om060443x

data_4074158
_publ_section_title
;
 Convenient Access to Homo- and Heterobimetallic Alkoxo Hydridozinc
 Clusters of Formula [(HZnOtBu)4-n(LiOtBu)n] (n= 0, 1, 2, 3)
;
_journal_issue                   21
_journal_name_full               Organometallics
_journal_page_first              4931
_journal_paper_doi               10.1021/om060443x
_journal_volume                  25
_journal_year                    2006
_chemical_formula_sum            'C16 H40 O4 Zn4'
_chemical_formula_weight         557.96
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           63
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-C 2c 2'
_symmetry_space_group_name_H-M   'C m c m'
_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            4
_cell_length_a                   18.0127(7)
_cell_length_b                   9.3522(4)
_cell_length_c                   20.0134(7)
_cell_measurement_temperature    173(2)
_cell_volume                     3371.4(2)
_computing_cell_refinement       'SAINT (Siemens, 1995)'
_computing_data_collection       'SMART (Siemens, 1995)'
_computing_data_reduction        'SAINT (Siemens, 1995)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Siemens SMART CCD'
_diffrn_measurement_method       \w
_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  0.1078
_diffrn_reflns_av_sigmaI/netI    0.0490
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            10177
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    2.821
_exptl_absorpt_correction_T_max  0.3982
_exptl_absorpt_correction_T_min  0.3328
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.099
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             1152
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.40
_platon_squeeze_details          ' ?'
_refine_diff_density_max         0.613
_refine_diff_density_min         -0.682
_refine_diff_density_rms         0.084
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.133
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     73
_refine_ls_number_reflns         1577
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.133
_refine_ls_R_factor_all          0.0529
_refine_ls_R_factor_gt           0.0459
_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^)+(0.0248P)^2^+13.5118P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1053
_refine_ls_wR_factor_ref         0.1080
_reflns_number_gt                1381
_reflns_number_total             1577
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om060443xsi20060519_122227.cif
_cod_data_source_block           Zn4
_cod_original_sg_symbol_H-M      Cmcm
_cod_database_code               4074158