Ligand-controlled synthesis of vanadium(i) β-diketiminates and their catalysis in cyclotrimerization of alkynes.
Chang, Kai-Chieh; Lu, Chia-Fu; Wang, Po-Yang; Lu, Duan-Yen; Chen, Hong-Zhang; Kuo, Ting-Shen; Tsai, Yi-Chou; Dalton transactions (Cambridge, England : 2003) 40 (2011) 2324–2331; doi:10.1039/c0dt01061h

data_7014693
_publ_section_title
;
 Ligand-controlled synthesis of vanadium(i) \b-diketiminates and their
 catalysis in cyclotrimerization of alkynes.
;
_journal_issue                   10
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2324
_journal_page_last               2331
_journal_paper_doi               10.1039/c0dt01061h
_journal_volume                  40
_journal_year                    2011
_chemical_formula_moiety         'C53 H59 N2 V'
_chemical_formula_sum            'C53 H59 N2 V'
_chemical_formula_weight         774.96
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                98.915(3)
_cell_angle_beta                 117.457(4)
_cell_angle_gamma                92.696(3)
_cell_formula_units_Z            2
_cell_length_a                   13.2728(11)
_cell_length_b                   13.3879(11)
_cell_length_c                   14.0552(12)
_cell_measurement_reflns_used    28784
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      25.35
_cell_measurement_theta_min      2.037
_cell_volume                     2169.3(3)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 19'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.941
_diffrn_measured_fraction_theta_max 0.941
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_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  0.1441
_diffrn_reflns_av_sigmaI/netI    0.3132
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            24184
_diffrn_reflns_theta_full        25.29
_diffrn_reflns_theta_max         25.29
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    0.266
_exptl_absorpt_correction_T_max  1.0901
_exptl_absorpt_correction_T_min  0.8433
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
?
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.186
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             828
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.477
_refine_diff_density_min         -0.579
_refine_diff_density_rms         0.157
_refine_ls_extinction_coef       0.041(5)
_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   1.016
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     506
_refine_ls_number_reflns         7409
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.2764
_refine_ls_R_factor_gt           0.1177
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1165P)^2^+1.4145P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2258
_refine_ls_wR_factor_ref         0.3050
_reflns_number_gt                2953
_reflns_number_total             7409
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            C0DT01061H.TXT
_cod_data_source_block           6692
_cod_database_code               7014693