Experimental and Theoretical Studies of the Hydrogenation of α,β-Unsaturated Acids by an 18eHydride Carbonylniobocene Complex
Antiñolo, Antonio; Dorani, Khédidja; García-Yuste, Santiago; López-Solera, Isabel; Otero, Antonio; Tercero-Morales, María Teresa; Kovács, Gábor; Ujaque, Gregori; Lledós, Agustí; Organometallics 31 (2012) 5177–; doi:10.1021/om300510m

data_4078905
_publ_section_title
;
 Experimental and Theoretical Studies of the Hydrogenation of
 \a,\b-Unsaturated Acids by an 18eHydride Carbonylniobocene Complex
;
_journal_issue                   14
_journal_name_full               Organometallics
_journal_page_first              5177
_journal_paper_doi               10.1021/om300510m
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C17 H27 Nb O Si2'
_chemical_formula_sum            'C17 H27 Nb O Si2'
_chemical_formula_weight         396.48
_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                 97.575(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.1324(12)
_cell_length_b                   12.8187(15)
_cell_length_c                   12.7936(15)
_cell_measurement_reflns_used    3478
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      23.302
_cell_measurement_theta_min      2.174
_cell_volume                     1972.3(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'omega scan'
_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  0.0886
_diffrn_reflns_av_sigmaI/netI    0.0698
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            12410
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.17
_exptl_absorpt_coefficient_mu    0.729
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.445
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            Purple
_exptl_crystal_density_diffrn    1.335
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prismatic
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.361
_refine_diff_density_min         -1.059
_refine_diff_density_rms         0.086
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.961
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         3472
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.961
_refine_ls_R_factor_all          0.0483
_refine_ls_R_factor_gt           0.0365
_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^)+(0.0372P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0871
_refine_ls_wR_factor_ref         0.0916
_reflns_number_gt                2629
_reflns_number_total             3472
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300510m_si_002.cif
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4078905