Interaction of Co(acac)2 and Ta(OMe)5: isolation and single crystal study of the products. MII2MV2(acac)2(OMe)12, MII = Co, Ni, Zn or Mg and MV = Ta or Nb: A new class of heterometallic heteroleptic alkoxide complexes
Werndrup, Pia; Kessler, Vadim G.; Journal of the Chemical Society, Dalton Transactions  (2001) 574–; doi:10.1039/b008526j

data_7702499
_publ_section_title
;
 Interaction of Co(acac)2 and Ta(OMe)5: isolation and single crystal study
 of the products. MII2MV2(acac)2(OMe)12, MII&#x2005;=&#x2005;Co, Ni, Zn or
 Mg and MV&#x2005;=&#x2005;Ta or Nb: A new class of heterometallic
 heteroleptic alkoxide complexes
;
_journal_issue                   5
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              574
_journal_paper_doi               10.1039/b008526j
_journal_year                    2001
_chemical_formula_sum            'C11 H25 Co O8 Ta'
_chemical_formula_weight         525.19
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/c 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                 117.787(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.946(3)
_cell_length_b                   14.175(4)
_cell_length_c                   12.044(3)
_cell_measurement_reflns_used    '999 (I>10 sigma(I)('
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      22.50
_cell_measurement_theta_min      2.39
_cell_volume                     1804.3(8)
_computing_cell_refinement       'Bruker SAINTPLUS'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINTPLUS'
_computing_molecular_graphics    'Bruker SHELXTL-NT'
_computing_publication_material  'Bruker SHELXTL-NT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker SMART CCD 1k'
_diffrn_measurement_method       'Bruker SMART'
_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  0.0808
_diffrn_reflns_av_sigmaI/netI    0.1008
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            8697
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.39
_exptl_absorpt_coefficient_mu    7.008
_exptl_absorpt_correction_T_max  0.3346
_exptl_absorpt_correction_T_min  0.1274
_exptl_absorpt_correction_type   'Bruker SADABS'
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.933
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             1020
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.890
_refine_diff_density_min         -2.984
_refine_diff_density_rms
'0.252 ========================================================== Compound 2'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.862
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         3152
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.862
_refine_ls_R_factor_all          0.1341
_refine_ls_R_factor_gt           0.0617
_refine_ls_shift/su_max          2.509
_refine_ls_shift/su_mean         0.142
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0840P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1366
_refine_ls_wR_factor_ref         0.1505
_reflns_number_gt                1483
_reflns_number_total             3152
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b008526j.txt
_cod_data_source_block           coacacm
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        1804.3(9)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7702499