Bidentate N-heterocyclic carbene complexes of Group 13 trihydrides and trihalides
Baker, Robert J.; Cole, Marcus L.; Jones, Cameron; Mahon, Mary F.; Journal of the Chemical Society, Dalton Transactions  (2002) 1992–; doi:10.1039/b200500j

data_7011491
_publ_section_title
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 Bidentate N-heterocyclic carbene complexes of Group 13 trihydrides and
 trihalides
;
_journal_issue                   9
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              1992
_journal_paper_doi               10.1039/b200500j
_journal_year                    2002
_chemical_formula_sum            'C16 H32 Al2 N4'
_chemical_formula_weight         334.42
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 100.031(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.0020(2)
_cell_length_b                   25.0350(8)
_cell_length_c                   6.8670(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      18
_cell_measurement_theta_min      12
_cell_volume                     1016.06(6)
_computing_data_reduction
'Denzo and Scalepack (otwinowski & Minor, 1997'
_computing_molecular_graphics    'ORTEX (P.McArdle, 1995)'
_computing_publication_material  'SHELXL-97/2 (Sheldrick,1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       KappaCCD
_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  0.0871
_diffrn_reflns_av_sigmaI/netI    0.0562
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            13427
_diffrn_reflns_theta_full        27.90
_diffrn_reflns_theta_max         27.90
_diffrn_reflns_theta_min         3.12
_exptl_absorpt_coefficient_mu    0.146
_exptl_absorpt_correction_T_max  0.9785
_exptl_absorpt_correction_T_min  0.9714
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.093
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Irregular
_exptl_crystal_F_000             364
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.314
_refine_diff_density_min         -0.285
_refine_diff_density_rms         0.054
_refine_ls_extinction_coef       0.047(7)
_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   1.083
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     165
_refine_ls_number_reflns         2391
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.0815
_refine_ls_R_factor_gt           0.0533
_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
[1.00000+0.00000exp(0.00(sin\q/\l)^2^)]/
[\s^2^(Fo^2^)+0.0000+0.6752*P+(0.0555P)^2^+0.0000sin\q/\l]
where P = 0.00000Fo^2^ + 1.00000Fc^2^
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1310
_refine_ls_wR_factor_ref         0.1431
_reflns_number_gt                1727
_reflns_number_total             2391
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b200500j.txt
_cod_data_source_block           cmpd5
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 
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_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7011491