Syntheses and crystal structures of lithium and niobium complexes containing a new type of monoanionic “scorpionate” ligand †
Otero, A.; Fernández-Baeza, J.; Tejeda, J.; Antiñolo, A.; Carrillo-Hermosilla, F.; Díez-Barra, E.; Lara-Sánchez, A.; Fernández-López, M.; Lanfranchi, M.; Pellinghelli, M. A.; Journal of the Chemical Society, Dalton Transactions  (1999) 3537–; doi:10.1039/a907505d

data_7027803
_publ_section_title
;
 Syntheses and crystal structures of lithium and niobium complexes
 containing a new type of monoanionic &#x201C;scorpionate&#x201D;
 ligand&#x200A;&#x2020;
;
_journal_issue                   20
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              3537
_journal_paper_doi               10.1039/a907505d
_journal_year                    1999
_chemical_formula_sum            'C48 H68 Li4 N16 O12'
_chemical_formula_weight         1088.94
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 114.28(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   27.355(8)
_cell_length_b                   8.966(3)
_cell_length_c                   25.515(8)
_cell_measurement_reflns_used    28
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      39
_cell_measurement_theta_min      20
_cell_volume                     5704(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR-92
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.465
_diffrn_measured_fraction_theta_max 0.465
_diffrn_measurement_device_type  'Siemens AED diffractometer'
_diffrn_measurement_method       \q/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0241
_diffrn_reflns_av_sigmaI/netI    0.0166
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -3
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            5486
_diffrn_reflns_theta_full        70.05
_diffrn_reflns_theta_max         70.05
_diffrn_reflns_theta_min         3.55
_diffrn_standards_decay_%        0
_diffrn_standards_number         1
_exptl_absorpt_coefficient_mu    0.757
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.268
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2304
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.313
_refine_diff_density_min         -0.259
_refine_diff_density_rms         0.059
_refine_ls_extinction_coef       0.00034(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     392
_refine_ls_number_reflns         5365
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0744
_refine_ls_R_factor_gt           0.0598
_refine_ls_shift/su_max          0.943
_refine_ls_shift/su_mean         0.018
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1392P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1760
_refine_ls_wR_factor_ref         0.1891
_reflns_number_gt                3909
_reflns_number_total             5365
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            907505dsup1.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.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.1392P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.1392P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7027803