Carbene complexes of phosphorus(v) fluorides substituted with perfluoroalkyl-groups synthesized by oxidative addition. Cleavage of the complexes reveals a new synthetic protocol for ionic liquids.
Böttcher, Tobias; Steinhauer, Simon; Allefeld, Nadine; Hoge, Berthold; Neumann, Beate; Stammler, Hans Georg; Bassil, Bassem S.; Winter, Martin; Mitzel, Norbert W.; Röschenthaler, Gerd-Volker; Dalton transactions (Cambridge, England : 2003) 43 (2014) 2979–2987; doi:10.1039/c3dt53043d

data_7028422
_publ_section_title
;
 Carbene complexes of phosphorus(v) fluorides substituted with
 perfluoroalkyl-groups synthesized by oxidative addition. Cleavage of the
 complexes reveals a new synthetic protocol for ionic liquids.
;
_journal_issue                   7
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2979
_journal_page_last               2987
_journal_paper_doi               10.1039/c3dt53043d
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety         'C5 H12 F2 N2'
_chemical_formula_sum            'C5 H12 F2 N2'
_chemical_formula_weight         138.17
_space_group_IT_number           43
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'F 2 -2d'
_symmetry_space_group_name_H-M   'F d d 2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   15.251(4)
_cell_length_b                   15.894(4)
_cell_length_c                   5.8246(18)
_cell_measurement_reflns_used    4059
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.98
_cell_measurement_theta_min      3.70
_cell_volume                     1411.9(7)
_computing_cell_refinement       'Dirax/lsq (Duisenberg & Schreurs, 1989-2000)'
_computing_data_collection       'Collect, Bruker AXS, 2004'
_computing_data_reduction
'EVALCCD (Duisenberg,1998,Thesis.Utrecht University.'
_computing_molecular_graphics    'SHELXTL-PLUS (1990)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0458
_diffrn_reflns_av_sigmaI/netI    0.0253
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            3718
_diffrn_reflns_theta_full        24.98
_diffrn_reflns_theta_max         24.98
_diffrn_reflns_theta_min         3.70
_exptl_absorpt_coefficient_mu    0.117
_exptl_absorpt_correction_T_max  0.9769
_exptl_absorpt_correction_T_min  0.9601
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2008/1 - Bruker AXS area detector scaling and absorption correction'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.300
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'in situ in a capillary'
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.114
_refine_diff_density_min         -0.125
_refine_diff_density_rms         0.034
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.5(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.165
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     66
_refine_ls_number_reflns         541
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.164
_refine_ls_R_factor_all          0.0384
_refine_ls_R_factor_gt           0.0289
_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^)+(0.0241P)^2^+0.5798P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0541
_refine_ls_wR_factor_ref         0.0572
_reflns_number_gt                473
_reflns_number_total             541
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt53043d.txt
_cod_data_source_block           compound1b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/automatic-downloads/current/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_database_code               7028422