Di- and Triammonium Salts of Carbamoyldicyanomethanide, C(CN)2(CONH2)−: Layered Organic Architectures
Turner, David R.; Batten, Stuart R.; Crystal Growth & Design 10 (2010) 2501–; doi:10.1021/cg900783k

data_4502243
_publ_section_title
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 Di- and Triammonium Salts of Carbamoyldicyanomethanide,
 C(CN)2(CONH2)&#x2212;: Layered Organic Architectures
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_journal_issue                   6
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              2501
_journal_paper_doi               10.1021/cg900783k
_journal_volume                  10
_journal_year                    2010
_chemical_formula_moiety         'C2 H10 N2, 2(C4 H2 N3 O)'
_chemical_formula_sum            'C10 H14 N8 O2'
_chemical_formula_weight         278.29
_chemical_name_systematic
;
 [H3N(CH2)2NH3](cdm)2
;
_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                 103.113(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9366(3)
_cell_length_b                   11.3566(3)
_cell_length_c                   14.5468(3)
_cell_measurement_reflns_used    8285
_cell_measurement_temperature    123(1)
_cell_measurement_theta_max      27.50
_cell_measurement_theta_min      2.45
_cell_volume                     1437.85(7)
_computing_cell_refinement       'Bruker SMART (Bruker)'
_computing_data_collection       'Bruker SMART (Bruker)'
_computing_data_reduction        'Bruker SAINT (Bruker)'
_computing_molecular_graphics    'X-Seed (Barbour, 1999)'
_computing_publication_material  'CIFTAB (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(1)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Bruker X8 Apex II CCD'
_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  0.0308
_diffrn_reflns_av_sigmaI/netI    0.0461
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            8285
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.45
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  0.9905
_exptl_absorpt_correction_T_min  0.9717
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.286
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.325
_refine_diff_density_min         -0.249
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.128
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     221
_refine_ls_number_reflns         3269
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.128
_refine_ls_R_factor_all          0.0615
_refine_ls_R_factor_gt           0.0510
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1090
_refine_ls_wR_factor_ref         0.1174
_reflns_number_gt                2776
_reflns_number_total             3269
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg900783k_si_001.cif
_cod_data_source_block           1
_cod_depositor_comments
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The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               4502243