Computational and experimental investigations of CO2 and N2O fixation by sterically demanding N-heterocyclic carbenes (NHC) and NHC/borane FLP systems.
Theuergarten, Eileen; Bannenberg, Thomas; Walter, Marc D.; Holschumacher, Dirk; Freytag, Matthias; Daniliuc, Constantin G.; Jones, Peter G.; Tamm, Matthias; Dalton transactions (Cambridge, England : 2003) 43 (2014) 1651–1662; doi:10.1039/c3dt52742e

data_7028375
_publ_section_title
;
 Computational and experimental investigations of CO2 and N2O fixation by
 sterically demanding N-heterocyclic carbenes (NHC) and NHC/borane FLP
 systems.
;
_journal_issue                   4
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1651
_journal_page_last               1662
_journal_paper_doi               10.1039/c3dt52742e
_journal_volume                  43
_journal_year                    2014
_chemical_formula_sum            'C11 H20 N4 O'
_chemical_formula_weight         224.31
_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                 99.208(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.2956(2)
_cell_length_b                   11.7049(2)
_cell_length_c                   11.2144(2)
_cell_measurement_reflns_used    14116
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      75.7649
_cell_measurement_theta_min      3.7733
_cell_volume                     1204.45(4)
_computing_cell_refinement
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.35.15 (release 03-08-2011 CrysAlis171 .NET) 
(compiled Aug  3 2011,13:03:54) 
;
_computing_data_collection
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.35.15 (release 03-08-2011 CrysAlis171 .NET) 
(compiled Aug  3 2011,13:03:54) 
;
_computing_data_reduction
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.35.15 (release 03-08-2011 CrysAlis171 .NET) 
(compiled Aug  3 2011,13:03:54) 
;
_computing_molecular_graphics    'BRUKER XP'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.3543
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur, Atlas, Nova'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'Nova (Cu) X-ray Source'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0229
_diffrn_reflns_av_sigmaI/netI    0.0098
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            19755
_diffrn_reflns_theta_full        75.00
_diffrn_reflns_theta_max         75.95
_diffrn_reflns_theta_min         5.50
_exptl_absorpt_coefficient_mu    0.664
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.53914
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.35.15 (release 03-08-2011 CrysAlis171 .NET) 
(compiled Aug  3 2011,13:03:54)  
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.237
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.253
_refine_diff_density_min         -0.289
_refine_diff_density_rms         0.040
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     160
_refine_ls_number_reflns         2504
_refine_ls_number_restraints     15
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0372
_refine_ls_R_factor_gt           0.0356
_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^)+(0.0491P)^2^+0.3782P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0919
_refine_ls_wR_factor_ref         0.0934
_reflns_number_gt                2365
_reflns_number_total             2504
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt52742e.txt
_cod_data_source_block           temp_eileen35
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7028375