Synthesis, Structure, and Molecular Orbital Studies of Yttrium, Erbium, and Lutetium Complexes Bearing η2-Pyrazolato Ligands: Development of a New Class of Precursors for Doping Semiconductors
Dirk Pfeiffer; Bhekumusa J. Ximba; Louise M. Liable-Sands; Arnold L. Rheingold; Mary Jane Heeg; David M. Coleman; H. Bernhard Schlegel; Thomas F. Kuech; Charles H. Winter; Inorganic Chemistry 38 (1999) 4539–4548; doi:10.1021/ic990319o

data_4322270
_publ_contact_author
;
     Dr. C. H. Winter
     Department of Chemistry
     Wayne State University
     Detroit, MI 48202
     USA
;
_publ_contact_author_email       cwinter@sun.science.wayne.edu
_publ_contact_author_fax         '+313 577 2099'
_publ_contact_author_phone       '+313 577 5224'
_publ_section_title
;
 Synthesis, Structure, and Molecular Orbital Studies of Yttrium, Erbium,
 and Lutetium Complexes Bearing \h2-Pyrazolato Ligands: Development of a
 New Class of Precursors for Doping Semiconductors
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4539
_journal_page_last               4548
_journal_paper_doi               10.1021/ic990319o
_journal_volume                  38
_journal_year                    1999
_chemical_formula_sum            'C43 H67 Er N8'
_chemical_formula_weight         863.31
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 101.7914(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.91690(10)
_cell_length_b                   19.5730(2)
_cell_length_c                   20.1065(2)
_cell_measurement_temperature    218(2)
_cell_measurement_theta_max      28.0
_cell_measurement_theta_min      2.0
_cell_volume                     4590.87(8)
_computing_cell_refinement       'Siemens SAINT'
_computing_data_collection       'Siemens SMART'
_computing_data_reduction        'Siemens SAINT'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      218(2)
_diffrn_measured_fraction_theta_full 0.937
_diffrn_measured_fraction_theta_max 0.937
_diffrn_measurement_device_type  'Siemens P4_CCD'
_diffrn_measurement_method       'omega/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  0.0771
_diffrn_reflns_av_sigmaI/netI    0.1164
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            27525
_diffrn_reflns_theta_full        28.38
_diffrn_reflns_theta_max         28.38
_diffrn_reflns_theta_min         1.75
_exptl_absorpt_coefficient_mu    1.864
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.678
_exptl_absorpt_correction_type   DIFABS
_exptl_crystal_colour            pink
_exptl_crystal_density_diffrn    1.249
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1796
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         1.009
_refine_diff_density_min         -0.949
_refine_diff_density_rms         0.140
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.982
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     522
_refine_ls_number_reflns         10775
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.982
_refine_ls_R_factor_all          0.1231
_refine_ls_R_factor_gt           0.0510
_refine_ls_shift/su_max          1.328
_refine_ls_shift/su_mean         0.054
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0300P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0850
_refine_ls_wR_factor_ref         0.1044
_reflns_number_gt                5869
_reflns_number_total             10775
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic990319o_6.cif
_cod_data_source_block           win37
_cod_original_cell_volume        4590.86(6)
_cod_database_code               4322270