New alkylzinc complexes with bulky tris(triazolyl)borate ligands: surprising water stability and reactivity.
Kumar, Mukesh; Papish, Elizabeth T.; Zeller, Matthias; Hunter, Allen D.; Dalton transactions (Cambridge, England : 2003) 39 (2010) 59–61; doi:10.1039/b918328k

data_7024552
_publ_section_title
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 New alkylzinc complexes with bulky tris(triazolyl)borate ligands:
 surprising water stability and reactivity.
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_journal_issue                   1
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              59
_journal_page_last               61
_journal_paper_doi               10.1039/b918328k
_journal_volume                  39
_journal_year                    2010
_chemical_formula_sum            'C54 H50 B2 N18 Zn'
_chemical_formula_weight         1038.11
_chemical_name_systematic
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?
;
_space_group_IT_number           167
_symmetry_cell_setting           rhombohedral
_symmetry_space_group_name_Hall  '-R 3 2"c'
_symmetry_space_group_name_H-M   'R -3 c :H'
_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                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            6
_cell_length_a                   13.9305(3)
_cell_length_b                   13.9305(3)
_cell_length_c                   43.3326(18)
_cell_measurement_reflns_used    6575
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.11
_cell_measurement_theta_min      2.53
_cell_volume                     7282.5(4)
_computing_cell_refinement       'SAINT+ 6.45 (Bruker, 2003)'
_computing_data_collection       'SMART 5.630 (Bruker, 1997-2002)'
_computing_data_reduction        'SAINT+ 6.45'
_computing_molecular_graphics    'SHELXTL 6.14'
_computing_publication_material  'SHELXTL 6.14'
_computing_structure_refinement  'SHELXTL 6.14'
_computing_structure_solution    'SHELXTL 6.14 (Bruker, 2000-2003)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker AXS SMART APEX CCD diffractometer'
_diffrn_measurement_method       '\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  0.0219
_diffrn_reflns_av_sigmaI/netI    0.0132
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -57
_diffrn_reflns_number            13581
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         1.93
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.567
_exptl_absorpt_correction_T_max  0.868
_exptl_absorpt_correction_T_min  0.776
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2007)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.420
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3240
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.43
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.377
_refine_diff_density_min         -0.332
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     115
_refine_ls_number_reflns         2017
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0331
_refine_ls_R_factor_gt           0.0297
_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^)+(0.0476P)^2^+9.8081P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0806
_refine_ls_wR_factor_ref         0.0834
_reflns_number_gt                1841
_reflns_number_total             2017
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b918328k.txt
_cod_data_source_block           08mz435_0m
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Rhombohedral' changed to
'rhombohedral' 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 
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_cod_original_sg_symbol_H-M      R-3c
_cod_database_code               7024552