Synthesis and Structural Characterization of Sm(II) and Yb(II) Complexes Containing Sterically Demanding, Chelating Secondary Phosphide Ligands
Keith Izod; Paul O'Shaughnessy; Joanne M. Sheffield; William Clegg; Stephen T. Liddle; Inorganic Chemistry 39 (2000) 4741–4748; doi:10.1021/ic0002871

data_4321453
_publ_section_title
;
 Synthesis and Structural Characterization of Sm(II) and Yb(II) Complexes
 Containing Sterically Demanding, Chelating Secondary Phosphide Ligands
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4741
_journal_page_last               4748
_journal_paper_doi               10.1021/ic0002871
_journal_volume                  39
_journal_year                    2000
_chemical_formula_sum            'C36 H70 N2 O P2 Si4 Sm'
_chemical_formula_weight         871.59
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     heavy
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 104.507(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.9880(17)
_cell_length_b                   13.0528(15)
_cell_length_c                   24.330(3)
_cell_measurement_reflns_used    18393
_cell_measurement_temperature    160(2)
_cell_measurement_theta_max      28.72
_cell_measurement_theta_min      2.72
_cell_volume                     4608.1(9)
_computing_cell_refinement       'local programs'
_computing_data_collection       'Siemens SMART'
_computing_data_reduction        'Siemens SAINT'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'SHELXTL and local programs'
_computing_structure_refinement  'Siemens SHELXTL'
_computing_structure_solution    'Siemens SHELXTL'
_diffrn_ambient_temperature      160(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.922
_diffrn_measurement_device_type  'Siemens SMART CCD diffractometer'
_diffrn_measurement_method       '\w rotation with narrow frames'
_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  0.0401
_diffrn_reflns_av_sigmaI/netI    0.0371
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            19419
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         28.72
_diffrn_reflns_theta_min         1.73
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.475
_exptl_absorpt_correction_T_max  0.621
_exptl_absorpt_correction_T_min  0.433
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            'dark green'
_exptl_crystal_density_diffrn    1.256
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1824
_exptl_crystal_size_max          0.54
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.38
_refine_diff_density_max         0.903
_refine_diff_density_min         -1.232
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.239
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     226
_refine_ls_number_reflns         5513
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.239
_refine_ls_R_factor_all          0.0426
_refine_ls_R_factor_gt           0.0386
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0271P)^2^+5.7969P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0854
_refine_ls_wR_factor_ref         0.0868
_reflns_number_gt                5139
_reflns_number_total             5513
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0002871_3.cif
_cod_data_source_block           ki51
_cod_database_code               4321453