Hexaalkylguanidinium and 2-(Dialkylamino)-1,3-dimethylimidazolinium Trimethyldifluorosiliconates and Perfluoroalkoxides. Accidental Isolation and Molecular Structure of [C(NMe2)3]+F-.6CH2Cl2
Alexander A. Kolomeitsev; German Bissky; Jan Barten; Natalya Kalinovich; Enno Lork; Gerd-Volker Röschenthaler; Inorganic Chemistry 41 (2002) 6118–6124; doi:10.1021/ic020081v

data_4318807
_publ_section_title
;
 Hexaalkylguanidinium and 2-(Dialkylamino)-1,3-dimethylimidazolinium
 Trimethyldifluorosiliconates and Perfluoroalkoxides. Accidental Isolation
 and Molecular Structure of [C(NMe2)3]+F-.6CH2Cl2
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              6118
_journal_page_last               6124
_journal_paper_doi               10.1021/ic020081v
_journal_volume                  41
_journal_year                    2002
_chemical_formula_sum            'C12 H29 F2 N3 Si'
_chemical_formula_weight         281.47
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           13
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yac'
_symmetry_space_group_name_H-M   'P 1 2/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                 96.99(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.135(2)
_cell_length_b                   8.600(2)
_cell_length_c                   10.580(2)
_cell_measurement_reflns_used    8000
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.25
_cell_measurement_theta_min      1.65
_cell_volume                     825.0(3)
_computing_cell_refinement       'STOE Cell'
_computing_data_collection       'STOE Expose'
_computing_data_reduction        'STOE Integrate'
_computing_molecular_graphics    DIAMOND
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'STOE IPDS'
_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  0.0829
_diffrn_reflns_av_sigmaI/netI    0.0434
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            11447
_diffrn_reflns_theta_full        26.04
_diffrn_reflns_theta_max         26.04
_diffrn_reflns_theta_min         2.78
_diffrn_standards_decay_%        'random variation +/-2.0'
_exptl_absorpt_coefficient_mu    0.152
_exptl_absorpt_correction_T_max  0.9702
_exptl_absorpt_correction_T_min  0.9278
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.133
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             308
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.216
_refine_diff_density_min         -0.196
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.070
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     90
_refine_ls_number_reflns         1621
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.0657
_refine_ls_R_factor_gt           0.0496
_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^)+(0.0804P)^2^+0.1455P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1377
_refine_ls_wR_factor_ref         0.1456
_reflns_number_gt                1195
_reflns_number_total             1621
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic020081v_1.cif
_cod_data_source_block           ak21i
_cod_database_code               4318807