Liquid Dinitromethanide Salts
Ling He; Guo-Hong Tao; Damon A. Parrish; Jean'ne M. Shreeve; Inorganic Chemistry 50 (2011) 679–685; doi:10.1021/ic101959r

data_4324248
_publ_contact_author_address
;
Laboratory for the Structure of Matter
Naval Research Laboratory
Washington, DC 20375
;
_publ_contact_author_email       damon.parrish@nrl.navy.mil
_publ_contact_author_fax         202-767-6874
_publ_contact_author_name        'Dr Damon A. Parrish'
_publ_contact_author_phone       202-404-2141
_publ_section_title
;
 Liquid Dinitromethanide Salts
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              679
_journal_page_last               685
_journal_paper_doi               10.1021/ic101959r
_journal_volume                  50
_journal_year                    2011
_chemical_formula_moiety         'C5 H9 N2 1+, C1 H1 N2 O4 1-'
_chemical_formula_sum            'C6 H10 N4 O4'
_chemical_formula_weight         202.18
_chemical_name_systematic
; 
 1,3-dimethyl-1H-imidazol-3-ium dinitromethanide, 8
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2010-01-07
_audit_creation_method           'from SHELXTL CIF, local template and enCIFer'
_cell_angle_alpha                103.759(4)
_cell_angle_beta                 90.757(4)
_cell_angle_gamma                96.874(4)
_cell_formula_units_Z            4
_cell_length_a                   7.1402(19)
_cell_length_b                   9.376(3)
_cell_length_c                   13.793(4)
_cell_measurement_temperature    100(2)
_cell_volume                     889.6(5)
_computing_cell_refinement       'Bruker APEX2 v2009.3-0 (Bruker, 2009)'
_computing_data_collection       'Bruker APEX2 v2009.3-0 (Bruker, 2009)'
_computing_data_reduction
;
Bruker SAINT v7.60A (Bruker, 2009), Bruker XPREP v2008/2 (Bruker, 2008)
;
_computing_molecular_graphics    'Bruker SHELXTL v2008/4 (Bruker, 2008)'
_computing_publication_material  'Bruker SHELXTL v2008/4 (Bruker, 2008)'
_computing_structure_refinement  'Bruker SHELXTL v2008/4 (Bruker, 2008)'
_computing_structure_solution    'Bruker SHELXTL v2008/4 (Bruker, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Bruker SMART APEX II CCD'
_diffrn_measurement_method       '\w 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  0.0147
_diffrn_reflns_av_sigmaI/netI    0.0222
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            9248
_diffrn_reflns_theta_full        28.35
_diffrn_reflns_theta_max         28.35
_diffrn_reflns_theta_min         1.52
_exptl_absorpt_coefficient_mu    0.128
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6742
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2008/1 (Bruker, 2008)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.510
_exptl_crystal_description       irregular
_exptl_crystal_F_000             424
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.221
_refine_diff_density_min         -0.298
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     257
_refine_ls_number_reflns         4372
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0431
_refine_ls_R_factor_gt           0.0347
_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^)+(0.0456P)^2^+0.2460P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0894
_refine_ls_wR_factor_ref         0.0944
_reflns_number_gt                3700
_reflns_number_total             4372
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic101959r_si_003.cif
_cod_data_source_block           shrv95
_cod_original_cell_volume        889.6(4)
_cod_database_code               4324248