Synthesis of N-cyanoalkyl-functionalized imidazolium nitrate and dicyanamide ionic liquids with a comparison of their thermal properties for energetic applications
Drab, David M.; Smiglak, Marcin; Shamshina, Julia L.; Kelley, Steven P.; Schneider, Stefan; Hawkins, Tommy W.; Rogers, Robin D.; New Journal of Chemistry 35 (2011) 1701–; doi:10.1039/c0nj00889c

data_7052651
_publ_section_title
;
 Synthesis of N-cyanoalkyl-functionalized imidazolium nitrate and
 dicyanamide ionic liquids with a comparison of their thermal
 properties for energetic applications
;
_journal_issue                   8
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              1701
_journal_paper_doi               10.1039/c0nj00889c
_journal_volume                  35
_journal_year                    2011
_chemical_formula_sum            'C8 H8 N6'
_chemical_formula_weight         188.20
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 112.283(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.8154(11)
_cell_length_b                   18.401(3)
_cell_length_c                   7.0641(10)
_cell_measurement_reflns_used    2674
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      23.20
_cell_measurement_theta_min      2.82
_cell_volume                     940.0(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0221
_diffrn_reflns_av_sigmaI/netI    0.0202
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            4233
_diffrn_reflns_theta_full        23.21
_diffrn_reflns_theta_max         23.21
_diffrn_reflns_theta_min         2.21
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.8855833
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Sheldrick 2002'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.330
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             392
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.221
_refine_diff_density_min         -0.258
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     128
_refine_ls_number_reflns         1338
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0416
_refine_ls_R_factor_gt           0.0366
_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^)+(0.0526P)^2^+0.3177P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0925
_refine_ls_wR_factor_ref         0.0961
_reflns_number_gt                1200
_reflns_number_total             1338
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0nj00889c.txt
_cod_data_source_block           4[N(CN)2]
_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_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7052651