Syntheses and Structures of Cationic and Neutral, Homo- and Heteroleptic tert-Butoxides of the Group 4 Metals
Edmond Y. Njua; Alexander Steiner; Lothar Stahl; Inorganic Chemistry 49 (2010) 2163–2172; doi:10.1021/ic9019537

data_4314959
_publ_contact_author_address
;Department of Chemistry
University of North Dakota
Grand Forks, ND 58202
USA
;
_publ_contact_author_email       lstahl@chem.und.edu
_publ_contact_author_fax         701-777-2331
_publ_contact_author_name        'Lothar Stahl'
_publ_contact_author_phone       701-777-2242
_publ_section_title
;
 Syntheses and Structures of Cationic and Neutral, Homo- and Heteroleptic
 tert-Butoxides of the Group 4 Metals
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              2163
_journal_page_last               2172
_journal_paper_doi               10.1021/ic9019537
_journal_volume                  49
_journal_year                    2010
_chemical_formula_sum            'C16 H34 Cl2 Hf O4'
_chemical_formula_weight         539.82
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 92.164(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.2463(13)
_cell_length_b                   10.5873(11)
_cell_length_c                   17.2373(18)
_cell_measurement_reflns_used    5861
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.14
_cell_measurement_theta_min      2.26
_cell_volume                     2233.3(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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 0.588
_diffrn_measured_fraction_theta_max 0.588
_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  0.0392
_diffrn_reflns_av_sigmaI/netI    0.0480
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            9940
_diffrn_reflns_theta_full        28.25
_diffrn_reflns_theta_max         28.25
_diffrn_reflns_theta_min         2.26
_exptl_absorpt_coefficient_mu    4.924
_exptl_absorpt_correction_T_max  0.4547
_exptl_absorpt_correction_T_min  0.1176
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.606
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1072
_exptl_crystal_size_max          0.76
_exptl_crystal_size_mid          0.54
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.970
_refine_diff_density_min         -1.158
_refine_diff_density_rms         0.110
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.988
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     264
_refine_ls_number_reflns         3249
_refine_ls_number_restraints     94
_refine_ls_restrained_S_all      0.980
_refine_ls_R_factor_all          0.0330
_refine_ls_R_factor_gt           0.0291
_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^)+(0.0357P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0718
_refine_ls_wR_factor_ref         0.0737
_reflns_number_gt                2838
_reflns_number_total             3249
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic9019537_si_001_5.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 the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_database_code               4314959