A Molecular Rotor Possessing an H-M-H "Spoke" on a P-M-P "Axle": A Platinum(II) trans-Dihydride Spins Rapidly Even at 75 K.
Prack, Ernest; O'Keefe, Christopher A; Moore, Jeremy K.; Lai, Angel; Lough, Alan J.; Macdonald, Peter M.; Conradi, Mark S.; Schurko, Robert W.; Fekl, Ulrich; Journal of the American Chemical Society 137 (2015) 13464–13467; doi:10.1021/jacs.5b08213

data_4129552
_publ_section_title
;
 A Molecular Rotor Possessing an H-M-H &quot;Spoke&quot; on a P-M-P
 &quot;Axle&quot;: A Platinum(II) trans-Dihydride Spins Rapidly Even at 75
 K.
;
_journal_issue                   42
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13464
_journal_page_last               13467
_journal_paper_doi               10.1021/jacs.5b08213
_journal_volume                  137
_journal_year                    2015
_chemical_formula_moiety         'C24 H56 P2 Pt'
_chemical_formula_sum            'C24 H56 P2 Pt'
_chemical_formula_weight         601.71
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 94.717(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.4834(12)
_cell_length_b                   13.6675(19)
_cell_length_c                   11.9574(16)
_cell_measurement_reflns_used    9940
_cell_measurement_temperature    147(2)
_cell_measurement_theta_max      27.52
_cell_measurement_theta_min      2.27
_cell_volume                     1381.7(3)
_computing_cell_refinement       APEX2
_computing_data_collection       'APEX2 (Bruker, 2014)'
_computing_data_reduction        'SAINT (Bruker, 2014)'
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT (Sheldrick, 2008)'
_diffrn_ambient_temperature      147(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Kappa APEX-DUO CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0492
_diffrn_reflns_av_unetI/netI     0.0152
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            69610
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.558
_diffrn_reflns_theta_min         2.267
_diffrn_source
'sealed tube with Bruker Triumph monochormator'
_exptl_absorpt_coefficient_mu    5.201
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5745
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.446
_exptl_crystal_description       needle
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.070
_exptl_crystal_size_min          0.060
_refine_diff_density_max         0.456
_refine_diff_density_min         -0.415
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         3185
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0197
_refine_ls_R_factor_gt           0.0136
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0059P)^2^+1.1770P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0278
_refine_ls_wR_factor_ref         0.0302
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2658
_reflns_number_total             3185
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja5b08213_si_002.cif
_cod_data_source_block           d1389
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4129552
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.423
_shelx_estimated_absorpt_t_max   0.745
_shelx_res_checksum              24383
_shelx_hkl_checksum              32305