Tungsten(VI) metallacarborane imido complexes; hydrogen bonding to a bent imido ligand in {W(NtBu)2[N(H)C(Me)NHtBu](C2B9H11)} †
Batsanov, Andrei S.; Goeta, Andrés E.; Howard, Judith A. K.; Hughes, Andrew K.; Johnson, Andrew L.; Wade, Ken; Journal of the Chemical Society, Dalton Transactions  (2001) 1210–; doi:10.1039/b100572n

data_7010581
_publ_section_title
;
 Tungsten(VI) metallacarborane imido complexes; hydrogen bonding to a
 bent imido ligand in
 {W(NtBu)2[N(H)C(Me)NHtBu](C2B9H11)}&#x200A;&#x2020;
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_journal_issue                   8
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              1210
_journal_paper_doi               10.1039/b100572n
_journal_year                    2001
_chemical_formula_sum            'C21 H48 B9 N3 W'
_chemical_formula_weight         623.76
_chemical_name_systematic
; 
? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.404(1)
_cell_length_b                   11.501(1)
_cell_length_c                   22.696(1)
_cell_measurement_reflns_used    511
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      20.6
_cell_measurement_theta_min      12.0
_cell_volume                     2976.7(4)
_computing_cell_refinement       'SMART-NT V5.0 (Bruker, 1998)'
_computing_data_collection       'SMART-NT V5.0 (Bruker, 1998)'
_computing_data_reduction        'SAINT-NT V5.0 (Bruker, 1998)'
_computing_molecular_graphics    'SHELXTL-NT V5.1 (Bruker, 1998)'
_computing_publication_material  'SHELXTL-NT V5.1 (Bruker, 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measurement_device       'SMART 1K CCD area detector'
_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  0.0306
_diffrn_reflns_av_sigmaI/netI    0.0232
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            25039
_diffrn_reflns_theta_max         30.35
_diffrn_reflns_theta_min         1.79
_diffrn_standards_decay_%        0.05
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.895
_exptl_absorpt_correction_T_max  0.5047
_exptl_absorpt_correction_T_min  0.2933
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
'XPREP (SHELXTL,1997),R(int)=0.064 before correction'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.392
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       prism
_exptl_crystal_F_000             1256
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         1.541
_refine_diff_density_min         -0.950
_refine_diff_density_rms         0.088
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.077(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.140
_refine_ls_goodness_of_fit_obs   1.091
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     434
_refine_ls_number_reflns         8059
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.188
_refine_ls_restrained_S_obs      1.101
_refine_ls_R_factor_all          0.0273
_refine_ls_R_factor_obs          0.0237
_refine_ls_shift/esd_max         0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0150P)^2^+4.6204P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0603
_refine_ls_wR_factor_obs         0.0543
_reflns_number_observed          7682
_reflns_number_total             8084
_reflns_observed_criterion       I>2\s(I)
_cod_data_source_file            b100572n.txt
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0150P)^2^+4.6204P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0150P)^2^+4.6204P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7010581