Pressure-induced collapse of guanidinium nitrate NâHâ ââO bonded honeycomb layers into a 3-D pattern with varied H-acceptor capacity
Andrzej Katrusiak; Marek Szafranski; Marcin Podsiadlo; Chem.Commun. 47 (2011) 2107–; doi:10.1039/c0cc02630a

data_7105954
_publ_section_title
;
 Pressure-induced collapse of guanidinium nitrate N\^aH\^a \^a\^aO bonded
 honeycomb layers into a 3-D pattern with varied H-acceptor capacity
;
_journal_name_full               Chem.Commun.
_journal_page_first              2107
_journal_paper_doi               10.1039/c0cc02630a
_journal_volume                  47
_journal_year                    2011
_chemical_formula_moiety         'C H6 N3, N O3'
_chemical_formula_sum            'C H6 N4 O3'
_chemical_formula_weight         122.10
_chemical_melting_point          486
_chemical_name_common            'guanidinium nitrate'
_chemical_name_systematic
;
guanidinium nitrate
;
_space_group_IT_number           7
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P -2yc'
_symmetry_space_group_name_H-M   'P 1 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                 100.80(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   4.8990(10)
_cell_length_b                   4.9170(10)
_cell_length_c                   10.350(2)
_cell_measurement_reflns_used    1866
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      28.93
_cell_measurement_theta_min      4.14
_cell_volume                     244.90(9)
_computing_cell_refinement       'CrysAlisRED (Oxford Diffraction, 2004)'
_computing_data_collection       'CrysAlisCCD (Oxford Diffraction, 2004)'
_computing_data_reduction
'CrysAlisRED (Oxford Diffraction, 2004); REDSHABS (Katrusiak, A. 2003)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1990)'
_computing_publication_material  'SHELXL--97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL--97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS--97 (Sheldrick, 1997)'
_diffrn_ambient_environment      'diamond-anvil cell'
_diffrn_ambient_pressure         680000
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.276
_diffrn_measured_fraction_theta_max 0.276
_diffrn_measurement_device_type  'KM-4 CCD'
_diffrn_measurement_method       '\f- and \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  0.0491
_diffrn_reflns_av_sigmaI/netI    0.0387
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            1866
_diffrn_reflns_theta_full        28.93
_diffrn_reflns_theta_max         28.93
_diffrn_reflns_theta_min         4.14
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.156
_exptl_absorpt_correction_T_max  0.84
_exptl_absorpt_correction_T_min  0.26
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
;
Correction for absorption of the diamond-anvil cell and the sample
were made using program REDSHABS (Katrusiak, A. (2003) REDSHABS. Adam
Mickiewicz University Pozna\'n; Katrusiak, A. (2004) Z. Kristallogr.
219, 461-467).
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.656
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             128
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.098
_refine_diff_density_min         -0.112
_refine_diff_density_rms         0.029
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   2(6)
_refine_ls_extinction_coef       0.48(3)
_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   1.203
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     34
_refine_ls_number_reflns         350
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.200
_refine_ls_R_factor_all          0.0902
_refine_ls_R_factor_gt           0.0669
_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^)+(0.0000P)^2^+0.2119P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0609
_refine_ls_wR_factor_ref         0.0667
_reflns_number_gt                286
_reflns_number_total             350
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            C0CC02630A.TXT
_cod_data_source_block           azg_polymorphIV_0.68GPa
_cod_original_sg_symbol_H-M      'P c'
_cod_database_code               7105954