Organolanthanide-based synthesis of 1,2,3-triazoles from nitriles and diazo compounds.
Evans, William J.; Montalvo, Elizabeth; Champagne, Timothy M.; Ziller, Joseph W.; DiPasquale, Antonio G.; Rheingold, Arnold L.; Journal of the American Chemical Society 130 (2008) 16–17; doi:10.1021/ja077298e

data_4101716
_publ_section_title
;
 Organolanthanide-based synthesis of 1,2,3-triazoles from nitriles and
 diazo compounds.
;
_journal_issue                   1
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              16
_journal_page_last               17
_journal_paper_doi               10.1021/ja077298e
_journal_volume                  130
_journal_year                    2008
_chemical_formula_moiety         {(C5Me5)2La[CNN(SiMe3)2](\m-N3)}3
_chemical_formula_sum            'C81 H144 La3 N15 Si6'
_chemical_formula_weight         1913.38
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           147
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-P 3'
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_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
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_audit_creation_method           SHELXTL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            2
_cell_length_a                   20.4393(10)
_cell_length_b                   20.4393(10)
_cell_length_c                   14.4731(13)
_cell_measurement_temperature    163(2)
_cell_volume                     5236.3(6)
_computing_cell_refinement       'Bruker SMART/SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      163(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0366
_diffrn_reflns_av_sigmaI/netI    0.0212
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            54639
_diffrn_reflns_theta_full        27.09
_diffrn_reflns_theta_max         27.09
_diffrn_reflns_theta_min         1.41
_diffrn_standards_decay_%        '< 1.0'
_diffrn_standards_interval_count 'initial 50 frames recollected'
_diffrn_standards_number         '50 frames'
_exptl_absorpt_coefficient_mu    1.313
_exptl_absorpt_correction_T_max  0.8076
_exptl_absorpt_correction_T_min  0.6565
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.214
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1980
_exptl_crystal_size_max          0.35
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_exptl_crystal_size_min          0.17
_refine_diff_density_max         1.728
_refine_diff_density_min         -0.303
_refine_diff_density_rms         0.104
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         7713
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_refine_ls_restrained_S_all      1.143
_refine_ls_R_factor_all          0.0291
_refine_ls_R_factor_gt           0.0255
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0418P)^2^+3.6644P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0742
_refine_ls_wR_factor_ref         0.0772
_reflns_number_gt                7263
_reflns_number_total             7713
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja077298e-file003.cif
_cod_data_source_block
em10,_{(C5Me5)2La[CNN(SiMe3)2](\m-N3)}3,_5._[CCDC#659713]
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1673 2011-04-08 12:14:43Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'n/a' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P-3
_cod_database_code               4101716