Volatile β-Ketoiminato- and β-Diketiminato-Based Zirconium Complexes as Potential MOCVD Precursors
Pier Luigi Franceschini; Marcus Morstein; Heinz Berke; Helmut W. Schmalle; Inorganic Chemistry 42 (2003) 7273–7282; doi:10.1021/ic034328f

data_4312380
_publ_contact_author             'Helmut W. Schmalle'
_publ_contact_author_email       schmalle@aci.unizh.ch
_publ_section_title
;
 Volatile \b-Ketoiminato- and \b-Diketiminato-Based Zirconium Complexes as
 Potential MOCVD Precursors
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7273
_journal_page_last               7282
_journal_paper_doi               10.1021/ic034328f
_journal_volume                  42
_journal_year                    2003
_chemical_formula_sum            'C20 H36 N8 Zr'
_chemical_formula_weight         479.79
_chemical_name_systematic
; 
 Tetra(2,4-pentadiketiminato)zirconium(IV)
;
_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                 108.790(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   20.8142(17)
_cell_length_b                   8.2760(5)
_cell_length_c                   29.569(2)
_cell_measurement_reflns_used    8000
_cell_measurement_temperature    183(2)
_cell_measurement_theta_max      28.0
_cell_measurement_theta_min      2.35
_cell_volume                     4822.1(6)
_computing_cell_refinement       'Stoe IPDS software'
_computing_data_collection       'Stoe IPDS software'
_computing_data_reduction        'XRED (Stoe & Cie, 1999)'
_computing_molecular_graphics    'PLATON, PLUTON (Spek, 1990, 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      183(2)
_diffrn_measured_fraction_theta_full 0.928
_diffrn_measured_fraction_theta_max 0.928
_diffrn_measurement_device_type  'Stoe IPDS diffractometer'
_diffrn_measurement_method       '\f oscillation scan'
_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  0.1213
_diffrn_reflns_av_sigmaI/netI    0.2060
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            34685
_diffrn_reflns_theta_full        28.01
_diffrn_reflns_theta_max         28.01
_diffrn_reflns_theta_min         2.57
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count ' image'
_diffrn_standards_interval_time  5.0
_diffrn_standards_number         '50 to 200'
_exptl_absorpt_coefficient_mu    0.478
_exptl_absorpt_correction_T_max  0.9673
_exptl_absorpt_correction_T_min  0.9022
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'Coppens et al. 1965'
_exptl_crystal_colour            pale-yellow
_exptl_crystal_density_diffrn    1.322
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2016
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.07
_refine_diff_density_max         1.523
_refine_diff_density_min         -0.513
_refine_diff_density_rms         0.086
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.818
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     539
_refine_ls_number_reflns         11545
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.818
_refine_ls_R_factor_all          0.1788
_refine_ls_R_factor_gt           0.0690
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     w=1/[\s^2^(Fo^2^)
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0709
_refine_ls_wR_factor_ref         0.0843
_reflns_number_gt                4170
_reflns_number_total             11545
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic034328fsi20030327_011706_1.cif
_cod_data_source_block           5
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4312380