Synthesis and structure of early transition metal NHC complexes
Lorber, Christian; Vendier, Laure; Dalton Transactions  (2009) 6972–; doi:10.1039/b905056f

data_7001946
_publ_section_title
;
 Synthesis and structure of early transition metal NHC complexes
;
_journal_issue                   35
_journal_name_full               'Dalton Transactions'
_journal_page_first              6972
_journal_paper_doi               10.1039/b905056f
_journal_year                    2009
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C33 H41 Cl3 N3 V, C21 H25 N2'
_chemical_formula_sum            'C54 H66 Cl3 N5 V'
_chemical_formula_weight         942.41
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_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
_cell_angle_alpha                90
_cell_angle_beta                 93.173(11)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.7897(15)
_cell_length_b                   11.8681(7)
_cell_length_c                   27.640(3)
_cell_measurement_reflns_used    8000
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      26.05
_cell_measurement_theta_min      1.65
_cell_measurement_wavelength     0.71073
_cell_volume                     5499.2(8)
_computing_cell_refinement       'Stoe IPDS software (Stoe, 1996)'
_computing_data_collection       'Stoe IPDS software (Stoe, 1996)'
_computing_data_reduction        'XRED (Stoe, 1.08, 1996)'
_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    'SIR92 (Giacovazzo et al, 1993)'
_diffrn_ambient_temperature      180
_diffrn_measured_fraction_theta_full 0.972
_diffrn_measured_fraction_theta_max 0.972
_diffrn_measurement_device       'Stoe IPDS'
_diffrn_measurement_method       \f
_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  0.1075
_diffrn_reflns_av_unetI/netI     0.1265
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            29659
_diffrn_reflns_theta_full        23.26
_diffrn_reflns_theta_max         23.26
_diffrn_reflns_theta_min         1.96
_diffrn_standards_decay_%        0.1
_diffrn_standards_interval_time  4
_diffrn_standards_number         200
_exptl_absorpt_coefficient_mu    0.363
_exptl_absorpt_correction_T_max  0.979
_exptl_absorpt_correction_T_min  0.928
_exptl_absorpt_correction_type   refdelf
_exptl_absorpt_process_details
;
(See: Walker, N. & Stuart, D. (1983) Acta Cryst. A39, 158-166)
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.138
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1996
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.303
_refine_diff_density_min         -0.36
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.832
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     584
_refine_ls_number_reflns         7685
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.832
_refine_ls_R_factor_all          0.1096
_refine_ls_R_factor_gt           0.0537
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0634P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1146
_refine_ls_wR_factor_ref         0.1324
_reflns_number_gt                4079
_reflns_number_total             7685
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            b905056f.txt
_cod_data_source_block           11
_cod_original_cell_volume        5499.1(8)
_cod_original_sg_symbol_Hall     -P_2ybc
_cod_database_code               7001946