Nitrogen-bound diazeniumdiolated amidines.
Biswas, Debanjan; Deschamps, Jeffrey R.; Keefer, Larry K.; Hrabie, Joseph A.; Chemical communications (Cambridge, England) 46 (2010) 5799–5801; doi:10.1039/c0cc00849d

data_7112920
_publ_section_title
;
 Nitrogen-bound diazeniumdiolated amidines.
;
_journal_issue                   31
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              5799
_journal_page_last               5801
_journal_paper_doi               10.1039/c0cc00849d
_journal_volume                  46
_journal_year                    2010
_chemical_formula_moiety         'C16 H18 N4 O2'
_chemical_formula_sum            'C16 H18 N4 O2'
_chemical_formula_weight         298.34
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                   9.9137(7)
_cell_length_b                   13.7220(10)
_cell_length_c                   22.4918(16)
_cell_measurement_reflns_used    8050
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.13
_cell_measurement_theta_min      2.69
_cell_volume                     3059.7(4)
_computing_cell_refinement       'Bruker SMART v5.631 (Bruker, 2001)'
_computing_data_collection       'Bruker SMART v5.631 (Bruker, 2001)'
_computing_data_reduction
;
Bruker SAINT v6.45A (Bruker, 2002), Bruker XPREP v6.14 (Bruker, 2001)
;
_computing_molecular_graphics    'Bruker SHELXTL v6.14 (Bruker, 2000b)'
_computing_publication_material  'Bruker SHELXTL v6.14 (Bruker, 2000b)'
_computing_structure_refinement  'Bruker SHELXTL v6.14 (Bruker, 2000b)'
_computing_structure_solution    'Bruker SHELXTL v6.14 (Bruker, 2000b)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0263
_diffrn_reflns_av_sigmaI/netI    0.0178
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            25385
_diffrn_reflns_theta_full        29.17
_diffrn_reflns_theta_max         29.17
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9761
_exptl_absorpt_correction_T_min  0.9581
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2.10 (Bruker, 2000c)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.295
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1264
_exptl_crystal_size_max          0.488
_exptl_crystal_size_mid          0.337
_exptl_crystal_size_min          0.275
_refine_diff_density_max         0.373
_refine_diff_density_min         -0.229
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         4131
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0444
_refine_ls_R_factor_gt           0.0373
_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^)+(0.0596P)^2^+0.7787P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1032
_refine_ls_wR_factor_ref         0.1084
_reflns_number_gt                3516
_reflns_number_total             4131
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c0cc00849d.txt
_cod_data_source_block           9
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7112920