Synthesis, Characterization, and Materials Chemistry of Group 4 Silylimides
Samuel D. Cosham; Andrew L. Johnson; Kieran C. Molloy; Andrew J. Kingsley; Inorganic Chemistry 50 (2011) 12053–12063; doi:10.1021/ic2015644

data_4327008
_publ_contact_author_address
;
Department of Chemistry,
University of Bath.
Claverton Down.
Bath.
BA2 7AY
United Kingdon
;
_publ_contact_author_email       a.l.johnson@bath.ac.uk
_publ_contact_author_fax         '+44 (0) 1225 386231'
_publ_contact_author_name
;
Dr. Andrew L. Johnson and Prof. Kieran C. Molloy
;
_publ_contact_author_phone       '+44 (0) 1225 384467'
_publ_section_title
;
 Synthesis, Characterization, and Materials Chemistry of Group 4
 Silylimides
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              12053
_journal_page_last               12063
_journal_paper_doi               10.1021/ic2015644
_journal_volume                  50
_journal_year                    2011
_chemical_formula_sum            'C20 H60 Hf2 N12 Si2'
_chemical_formula_weight         881.96
_chemical_name_systematic
;
 ?
;
_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                 101.6260(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.9930(2)
_cell_length_b                   13.9280(3)
_cell_length_c                   13.7290(3)
_cell_measurement_reflns_used    35032
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.51
_cell_measurement_theta_min      3.73
_cell_volume                     1684.34(6)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Kappa CCD'
_computing_data_reduction
'Denzo and Scalepak (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEP 3 for Windows (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker Kappa CCD Diffractometer'
_diffrn_measurement_method       'omega and phi 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  0.0711
_diffrn_reflns_av_sigmaI/netI    0.0511
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            35032
_diffrn_reflns_theta_full        30.51
_diffrn_reflns_theta_max         30.51
_diffrn_reflns_theta_min         3.73
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    6.260
_exptl_absorpt_correction_T_max  0.5733
_exptl_absorpt_correction_T_min  0.5204
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.739
_exptl_crystal_description       block
_exptl_crystal_F_000             872
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.819
_refine_diff_density_min         -1.587
_refine_diff_density_rms         0.166
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.998
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     174
_refine_ls_number_reflns         5116
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.998
_refine_ls_R_factor_all          0.0508
_refine_ls_R_factor_gt           0.0277
_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^)+(0.0209P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0481
_refine_ls_wR_factor_ref         0.0527
_reflns_number_gt                3904
_reflns_number_total             5116
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic2015644_si_003_10.cif
_cod_data_source_block           12
_cod_database_code               4327008