Structural and theoretical investigation of 2-iminoimidazolines‒carbene analogues of iminophosphoranes.
Tamm, Matthias; Petrovic, Dejan; Randoll, Sören; Beer, Stephan; Bannenberg, Thomas; Jones, Peter G.; Grunenberg, Jörg; Organic & biomolecular chemistry 5 (2007) 523–530; doi:10.1039/b615418b

data_7151057
_publ_section_title
;
 Structural and theoretical investigation of
 2-iminoimidazolines--carbene analogues of iminophosphoranes.
;
_journal_issue                   3
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              523
_journal_page_last               530
_journal_paper_doi               10.1039/b615418b
_journal_volume                  5
_journal_year                    2007
_chemical_formula_moiety         'C15 H33 N3 Si2'
_chemical_formula_sum            'C15 H33 N3 Si2'
_chemical_formula_weight         311.62
_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
_cell_angle_beta                 103.035(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.259(2)
_cell_length_b                   9.8467(18)
_cell_length_c                   18.752(3)
_cell_measurement_reflns_used    5943
_cell_measurement_temperature    133
_cell_measurement_theta_max      30.01
_cell_measurement_theta_min      2.35
_cell_volume                     2025.4(6)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1998)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      133(2)
_diffrn_detector                 ' CCD plate '
_diffrn_detector_area_resol_mean 8.192
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD'
_diffrn_measurement_method       \w-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_av_R_equivalents  0.0727
_diffrn_reflns_av_sigmaI/netI    0.0493
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            17512
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         1.94
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.172
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.022
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       needle
_exptl_crystal_F_000             688
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.393
_refine_diff_density_min         -0.284
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    'rigid methyls, other riding'
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         4145
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.127
_refine_ls_R_factor_all          0.0807
_refine_ls_R_factor_gt           0.0633
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(Fo^2^)+(0.0349P)^2^+3.7145P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1509
_refine_ls_wR_factor_ref         0.1581
_reflns_number_gt                3184
_reflns_number_total             4145
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b615418b.txt
_cod_data_source_block           sran10x
_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 
;
_cod_original_sg_symbol_Hall     '-P 2ync'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7151057