Formic Acid As a Hydrogen Storage Medium: Ruthenium-Catalyzed Generation of Hydrogen from Formic Acid in Emulsions
Czaun, Miklos; Goeppert, Alain; Kothandaraman, Jotheeswari; May, Robert B.; Haiges, Ralf; Prakash, G. K. Surya; Olah, George A.; ACS Catalysis 4 (2014) 311–; doi:10.1021/cs4007974

data_4509846
_publ_section_title
;
 Formic Acid As a Hydrogen Storage Medium: Ruthenium-Catalyzed Generation
 of Hydrogen from Formic Acid in Emulsions
;
_journal_issue                   1
_journal_name_full               'ACS Catalysis'
_journal_page_first              311
_journal_paper_doi               10.1021/cs4007974
_journal_volume                  4
_journal_year                    2014
_chemical_formula_moiety         'C42 H32 O8 P2 Ru2'
_chemical_formula_sum            'C42 H32 O8 P2 Ru2'
_chemical_formula_weight         928.76
_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'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 94.1970(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.2898(8)
_cell_length_b                   19.8988(12)
_cell_length_c                   14.5203(8)
_cell_measurement_reflns_used    258
_cell_measurement_temperature    100.(2)
_cell_measurement_theta_max      25.67
_cell_measurement_theta_min      2.01
_cell_volume                     3829.6(4)
_computing_cell_refinement       'APEX2 v2012.4-3 (Bruker AXS)'
_computing_data_collection       'Bruker Instrument Service v2012.6-0'
_computing_data_reduction        'SAINT V8.18C (Bruker AXS, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX II CCD'
_diffrn_measurement_method       'omega- and phi-scans'
_diffrn_radiation_monochromator  'TRIUMPH curved-crystal'
_diffrn_radiation_type           'MoK\a '
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0408
_diffrn_reflns_av_sigmaI/netI    0.0288
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            54776
_diffrn_reflns_theta_full        28.30
_diffrn_reflns_theta_max         28.30
_diffrn_reflns_theta_min         1.74
_diffrn_source                   'fine-focus tube'
_exptl_absorpt_coefficient_mu    0.926
_exptl_absorpt_correction_T_max  0.96
_exptl_absorpt_correction_T_min  0.77
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS V2008/1'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.611
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1864
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.050
_refine_diff_density_max         0.528
_refine_diff_density_min         -0.697
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     487
_refine_ls_number_reflns         9510
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0339
_refine_ls_R_factor_gt           0.0236
_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^)+(0.0187P)^2^+2.8726P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0497
_refine_ls_wR_factor_ref         0.0534
_reflns_number_gt                8031
_reflns_number_total             9510
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cs4007974_si_002.cif
_cod_data_source_block           I
_cod_database_code               4509846