Hydrogen-Bonded Networks Constructed with 5-Nitrobarbiturate
Han, Jie; Zhao, Liang; Yau, Chung-Wah; Mak, Thomas C. W.; Crystal Growth & Design 9 (2009) 308–; doi:10.1021/cg800487b

data_4511195
_publ_section_title
;
 Hydrogen-Bonded Networks Constructed with 5-Nitrobarbiturate
;
_journal_issue                   1
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              308
_journal_paper_doi               10.1021/cg800487b
_journal_volume                  9
_journal_year                    2009
_chemical_formula_sum            'C18 H38 N8 O7'
_chemical_formula_weight         478.56
_chemical_name_common            '[(C3H7)4N][(C4H2N3O5)][2(NH2)2CO]'
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/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                 103.901(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.363(2)
_cell_length_b                   8.8426(13)
_cell_length_c                   18.128(3)
_cell_measurement_temperature    293(2)
_cell_volume                     2546.1(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_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  0.0281
_diffrn_reflns_av_sigmaI/netI    0.0325
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            16824
_diffrn_reflns_theta_full        28.37
_diffrn_reflns_theta_max         28.37
_diffrn_reflns_theta_min         1.51
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.790179
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.248
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1032
_exptl_crystal_size_max          0.47
_exptl_crystal_size_mid          0.41
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.303
_refine_diff_density_min         -0.203
_refine_diff_density_rms         0.036
_refine_ls_extinction_coef       0.0026(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.011
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         6304
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.011
_refine_ls_R_factor_all          0.0876
_refine_ls_R_factor_gt           0.0485
_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^)+(0.0705P)^2^+0.5751P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1308
_refine_ls_wR_factor_ref         0.1588
_reflns_number_gt                3778
_reflns_number_total             6304
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg800487b_si_002.cif
_cod_data_source_block           complex8
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/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_original_sg_symbol_H-M      P21/n
_cod_database_code               4511195