Air-stable gold nanoparticles ligated by secondary phosphine oxides for the chemoselective hydrogenation of aldehydes: crucial role of the ligand.
Cano, Israel; Chapman, Andrew M.; Urakawa, Atsushi; van Leeuwen, Piet W. N. M.; Journal of the American Chemical Society 136 (2014) 2520–2528; doi:10.1021/ja411202h

data_4120538
_publ_section_title
;
 Air-stable gold nanoparticles ligated by secondary phosphine oxides for
 the chemoselective hydrogenation of aldehydes: crucial role of the
 ligand.
;
_journal_issue                   6
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2520
_journal_page_last               2528
_journal_paper_doi               10.1021/ja411202h
_journal_volume                  136
_journal_year                    2014
_chemical_formula_sum            'C28 H34 Au2 Cl2 O2 P2'
_chemical_formula_weight         929.33
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 116.008(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.686(2)
_cell_length_b                   7.1818(8)
_cell_length_c                   21.924(3)
_cell_measurement_reflns_used    7161
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.48
_cell_measurement_theta_min      2.26
_cell_volume                     2927.3(6)
_computing_cell_refinement       'Bruker APEX2 v2011.4-0'
_computing_data_collection       'Bruker APEX2 v2011.4-0'
_computing_data_reduction        'Bruker SAINT V7.60A'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 512
_diffrn_detector_type            '4K CCD area detector APEX II'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'APEX DUO Kappa 4-axis goniometer'
_diffrn_measurement_method
;
 Fullsphere data collection, phi and omega scans
;
_diffrn_measurement_specimen_support 'magnetic support with MicroMount'
_diffrn_radiation_monochromator  'Quazar MX Multilayer Optics'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0511
_diffrn_reflns_av_sigmaI/netI    0.0580
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            25643
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         28.50
_diffrn_reflns_theta_min         1.13
_diffrn_source                   'Microfocus source E025 IuS'
_diffrn_source_current           0.6
_diffrn_source_power             50
_diffrn_source_size              '0.2 mm x 0.2 mm fine focus'
_diffrn_source_type              'Bruker APEX DUO'
_exptl_absorpt_coefficient_mu    10.328
_exptl_absorpt_correction_T_max  0.8201
_exptl_absorpt_correction_T_min  0.4249
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
; 
 SADABS Version 2008/1 Bruker-Nonius
 Blessing, Acta Cryst. (1995) A51 33-38
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.109
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1760
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_diff_density_max         6.165
_refine_diff_density_min         -5.314
_refine_diff_density_rms         0.368
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.273
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         7342
_refine_ls_number_restraints     96
_refine_ls_restrained_S_all      1.269
_refine_ls_R_factor_all          0.1036
_refine_ls_R_factor_gt           0.0880
_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^)+(0.0453P)^2^+144.7089P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1912
_refine_ls_wR_factor_ref         0.1970
_reflns_number_gt                6291
_reflns_number_total             7342
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja411202h_si_003.cif
_cod_data_source_block           mo_icr255_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4120538