Synthesis, spectroscopic studies and structural systematics of phosphine oxide complexes with Group II metal (beryllium?barium) nitrates
Davis, Martin F.; Levason, William; Ratnani, Raju; Reid, Gillian; Webster, Michael; New Journal of Chemistry 30 (2006) 782–; doi:10.1039/b600301j

data_7052252
_publ_section_title
;
 Synthesis, spectroscopic studies and structural systematics of
 phosphine oxide complexes with Group II metal (beryllium?barium)
 nitrates
;
_journal_issue                   5
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              782
_journal_paper_doi               10.1039/b600301j
_journal_volume                  30
_journal_year                    2006
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C50 H44 Ca N2 O10 P4'
_chemical_formula_sum            'C50 H44 Ca N2 O10 P4'
_chemical_formula_weight         996.83
_chemical_name_systematic
;
Bis(nitrato-O,O')bis(bis(diphenylphosphinoyl)methane)calcium(II)
;
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      29
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2005-10-23
_audit_creation_method           'SHELXL-97 + hand edit'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.4255(16)
_cell_length_b                   11.3207(10)
_cell_length_c                   22.2120(15)
_cell_measurement_reflns_used    14383
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      21.49
_cell_measurement_theta_min      2.91
_cell_volume                     5136.1(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'area detector, Nonius Kappa ccd'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Nonius rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1198
_diffrn_reflns_av_sigmaI/netI    0.1139
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            15486
_diffrn_reflns_theta_full        21.55
_diffrn_reflns_theta_max         21.55
_diffrn_reflns_theta_min         3.25
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.303
_exptl_absorpt_correction_T_max  1.0042
_exptl_absorpt_correction_T_min  0.8968
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SORTAV, R H Blessing, J. Appl. Cryst., 1997, 30, 421-426.'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.289
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2072
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.372
_refine_diff_density_min         -0.422
_refine_diff_density_rms         0.103
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     604
_refine_ls_number_reflns         5673
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.1165
_refine_ls_R_factor_gt           0.0843
_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^)+(0.1510P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2133
_refine_ls_wR_factor_ref         0.2361
_reflns_number_gt                4196
_reflns_number_total             5673
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            b600301j.txt
_cod_data_source_block           04rju010
_cod_database_code               7052252