Tris(imidazolin-2-ylidene-1-yl)borate Complexes of the Heavier Alkaline Earths: Synthesis and Structural Studies
Arrowsmith, Merle; Heath, Alex; Hill, Michael S.; Hitchcock, Peter B.; Kociok-Köhn, Gabriele; Organometallics 28 (2009) 4550–; doi:10.1021/om9003994

data_4069746
_publ_section_title
;
 Tris(imidazolin-2-ylidene-1-yl)borate Complexes of the Heavier Alkaline
 Earths: Synthesis and Structural Studies
;
_journal_issue                   15
_journal_name_full               Organometallics
_journal_page_first              4550
_journal_paper_doi               10.1021/om9003994
_journal_volume                  28
_journal_year                    2009
_chemical_formula_moiety         'C38 H42 B2 N4, 2(C7 H8)'
_chemical_formula_sum            'C52 H58 B2 N4'
_chemical_formula_weight         760.64
_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                 103.475(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.5721(5)
_cell_length_b                   11.7891(3)
_cell_length_c                   21.3849(4)
_cell_measurement_reflns_used    20135
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      2.910
_cell_volume                     4308.13(19)
_computing_cell_refinement       'HKL Scalepack (Otwinski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
;
 DENZO-SCALEPACK Z. Otwinowski and W. Minor, " 
 Processing of X-ray Diffraction Data Collected in Oscillation Mode ", 
 Methods in Enzymology, Volume 276: Macromolecular Crystallography, 
 part A, p.307-326, 1997,C.W. Carter, Jr. & R. M. Sweet, Eds., Academic Press.
;
_computing_molecular_graphics
'ORTEP3 for Windows - Farrugia, L. J. J. Appl. Crystallogr. 1997, 30, 565'
_computing_publication_material
;
 'WinGX publication routines, Farrugia, 
 L. J., J. Appl. Crystallogr., 1999, 32, 837-838
;
_computing_structure_refinement
;
 SHELXL97 -Program for Crystal Structure Analysis (Release 97-2). 
 Sheldrick, G.M., Instit\"ut f\"ur Anorganische Chemie der Universit\"at, 
 Tammanstrasse 4, D-3400 G\"ottingen, Germany, 1998 
;
_computing_structure_solution
; 
 SIR97- Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C. , 
 Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R. 
 (1999) J. Appl. Cryst. 32, 115-119
;
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       '232 1.5 degree images with \w scans'
_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  0.0964
_diffrn_reflns_av_sigmaI/netI    0.0514
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            27498
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.97
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.173
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'hexagonal plate'
_exptl_crystal_F_000             1632
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.211
_refine_diff_density_min         -0.264
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     329
_refine_ls_number_reflns         4879
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0718
_refine_ls_R_factor_gt           0.0487
_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^)+(0.0686P)^2^+1.6970P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1187
_refine_ls_wR_factor_ref         0.1352
_reflns_number_gt                3670
_reflns_number_total             4879
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om9003994_si_002.cif
_cod_data_source_block           h08msh24
_cod_original_cell_volume        4308.13(18)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4069746