Tetrahedral [HnPt4(CO)4(P∧P)2]n+(n= 1, 2; P∧P = CH2═C(PPh2)2) Cationic Mono- and Dihydrido Carbonyl Clusters Obtained by Protonation of the Neutral Pt4(CO)4(P∧P)2
Ciabatti, Iacopo; Femoni, Cristina; Iapalucci, Maria Carmela; Longoni, Giuliano; Zacchini, Stefano; Organometallics 32 (2013) 5180–; doi:10.1021/om400723w

data_4081448
_publ_section_title
;
 Tetrahedral [HnPt4(CO)4(P&#x2227;P)2]n+(n= 1, 2; P&#x2227;P =
 CH2&#x2550;C(PPh2)2) Cationic Mono- and Dihydrido Carbonyl Clusters
 Obtained by Protonation of the Neutral Pt4(CO)4(P&#x2227;P)2
;
_journal_issue                   18
_journal_name_full               Organometallics
_journal_page_first              5180
_journal_paper_doi               10.1021/om400723w
_journal_volume                  32
_journal_year                    2013
_chemical_formula_sum            'C56 H44 O4 P4 Pt4'
_chemical_formula_weight         1685.15
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           56
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ab 2ac'
_symmetry_space_group_name_H-M   'P c c n'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.612(2)
_cell_length_b                   17.153(3)
_cell_length_c                   22.770(4)
_cell_measurement_reflns_used    6087
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.879
_cell_measurement_theta_min      2.332
_cell_volume                     5316.5(15)
_computing_cell_refinement       'APEX2 (Bruker AXS, 2006)'
_computing_data_collection       'APEX2 (Bruker AXS, 2006)'
_computing_data_reduction        'SAINT (Bruker AXS, 2004)'
_computing_molecular_graphics    'SCHAKAL99 (Keller, 1999)'
_computing_publication_material  'XCIF (Bruker AXS, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.1378
_diffrn_reflns_av_sigmaI/netI    0.0617
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            47084
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         1.79
_exptl_absorpt_coefficient_mu    10.658
_exptl_absorpt_correction_T_max  0.3379
_exptl_absorpt_correction_T_min  0.2500
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
 Data were corrected for Lorentz polarization and absorption
 effects (empirical absorption corrections SADABS).
 R(int) = 0.1556 (selected reflections only, before parameter refinement)
 R(int) = 0.0726 (selected reflections only, after parameter refinement)
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    2.105
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             3136
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         2.072
_refine_diff_density_min         -1.457
_refine_diff_density_rms         0.236
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         4695
_refine_ls_number_restraints     162
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0885
_refine_ls_R_factor_gt           0.0535
_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^)+(0.0698P)^2^+17.1764P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1206
_refine_ls_wR_factor_ref         0.1355
_reflns_number_gt                3231
_reflns_number_total             4695
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400723w_si_001.cif
_cod_data_source_block           pccnx_cif1
_cod_original_cell_volume        5316.1(15)
_cod_original_sg_symbol_H-M      Pccn
_cod_database_code               4081448