Synthesis, Characterization, and Activity of Yttrium(III) Nitrate Complexes Bearing Tripodal Phosphine Oxide and Mixed Phosphine-Phosphine Oxide Ligands
Peter E. Sues; Alan J. Lough; Robert H. Morris; Inorganic Chemistry 51 (2012) 9322–9332; doi:10.1021/ic3010147

data_4330170
_publ_section_title
;
 Synthesis, Characterization, and Activity of Yttrium(III) Nitrate
 Complexes Bearing Tripodal Phosphine Oxide and Mixed Phosphine-Phosphine
 Oxide Ligands
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              9322
_journal_page_last               9332
_journal_paper_doi               10.1021/ic3010147
_journal_volume                  51
_journal_year                    2012
_chemical_formula_moiety         'C44 H45 N3 O12 P3 Y, C4 H10 O'
_chemical_formula_sum            'C48 H55 N3 O13 P3 Y'
_chemical_formula_weight         1063.77
_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                 113.7980(14)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   23.5739(11)
_cell_length_b                   10.0316(3)
_cell_length_c                   24.8254(12)
_cell_measurement_reflns_used    31826
_cell_measurement_temperature    150(1)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.6
_cell_volume                     5371.6(4)
_computing_cell_refinement       'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius B.V., 1997-2002)'
_computing_data_reduction        Denzo-SMN
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  'SHELXTL V6.1'
_computing_structure_refinement  'SHELXTL V6.1 (Sheldrick, 2008)'
_computing_structure_solution    'SIR-92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.954
_diffrn_measured_fraction_theta_max 0.954
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f scans and \w scans with \k offsets'
_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  0.116
_diffrn_reflns_av_sigmaI/netI    0.1508
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            35651
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         2.55
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.236
_exptl_absorpt_correction_T_max  0.850
_exptl_absorpt_correction_T_min  0.714
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements 
 Sortav (Blessing 1995)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.315
_exptl_crystal_description       Block
_exptl_crystal_F_000             2208
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.12
_platon_squeeze_details
;
During the 
refinement of the structure, electron density peaks were located 
that were believed to be highly disordered 
solvent molecules (possibly acetonitrile/diethyl ether). Attempts 
made to model the solvent molecule were not successful. 
The SQUEEZE option in PLATON (Spek, 2003) indicated there was a 
large solvent cavity. In the final cycles of refinement, 
this contribution to the 
electron density was removed from the observed data. The 
density, the F(000) value, the molecular weight and the formula are 
given without taking into account the results obtained with the 
SQUEEZE option PLATON (Spek, 2003). Similar treatments of disordered 
solvent molecules were carried out by St\"ahler et al. (2001), 
Cox et al. (2003), Mohamed et al. (2003) and Athimoolam et al. (2005). 
References: 
  
Spek, A. L. (2003). J. Appl. Cryst. 36, 7-13 
  
Athimoolam, S., Kumar, J., Ramakrishnan, V. & Rajaram, R.K. (2005). 
Acta Cryst. E61, m2014-m2017. 
  
Cox, J.P., Kumarasammy, Y., Nahar, L., Sarkar D.S. & Shoeb, M. 
(2003). Acta Cryst. E59, o975-o977. 
  
Mohamed, A.A., Krause Bauer, A.J., Bruce, E.A. & Bruce M.R.M. 
(2003). Acta Cryst. C59, m84-m86. 
  
St\"ahler, R., N\"ather, C. & Bensch, W. (2001). Acta Cryst. 
C57, 26-27. 

;
_refine_diff_density_max         0.715
_refine_diff_density_min         -0.984
_refine_diff_density_rms         0.105
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     560
_refine_ls_number_reflns         11711
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.1548
_refine_ls_R_factor_gt           0.0723
_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^)+(0.0866P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1621
_refine_ls_wR_factor_ref         0.1853
_reflns_number_gt                6179
_reflns_number_total             11711
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic3010147_si_002_6.cif
_cod_data_source_block           k11193_2b
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4330170