Two scandium‒biuret complexes: [Sc(C~2~H~5~N~3~O~2~)(H~2~O)~5~]Cl~3~·H~2~O and [Sc(C~2~H~5~N~3~O~2~)~4~](NO~3~)~3~
Harrison, William T. A.; Acta Crystallographica Section C 64 (2008) m205–m208; doi:10.1107/S010827010800824X

data_2016615
_publ_section_title
;
 Two scandium--biuret complexes:
 [Sc(C~2~H~5~N~3~O~2~)(H~2~O)~5~]Cl~3~&#x00B7;H~2~O and
 [Sc(C~2~H~5~N~3~O~2~)~4~](NO~3~)~3~
;
_journal_coeditor_code           SK3214
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              m205
_journal_page_last               m208
_journal_paper_doi               10.1107/S010827010800824X
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          '[Sc (C2 H5 N3 O2)4] (N O3)3'
_chemical_formula_moiety         'C8 H20 N12 O8 Sc, 3(N O3)'
_chemical_formula_sum            'C8 H20 N15 O17 Sc'
_chemical_formula_weight         643.36
_chemical_name_systematic
;
tetrakis(biuret-\k^2^O,O')scandium(III) trinitrate
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 107.344(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.2409(13)
_cell_length_b                   7.0167(4)
_cell_length_c                   17.4653(13)
_cell_measurement_reflns_used    2691
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     2250.7(3)
_computing_cell_refinement       'HKL SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1998)'
_computing_data_reduction
;
HKL DENZO and SCALEPACK (Otwinowski & Minor, 1997), and SORTAV
(Blessing, 1995)
;
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\w and \f'
_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  0.0696
_diffrn_reflns_av_sigmaI/netI    0.0711
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            12063
_diffrn_reflns_theta_full        27.57
_diffrn_reflns_theta_max         27.57
_diffrn_reflns_theta_min         3.11
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.446
_exptl_absorpt_correction_T_max  0.957
_exptl_absorpt_correction_T_min  0.924
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.899
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'cut slab'
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.605
_refine_diff_density_min         -0.388
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     204
_refine_ls_number_reflns         2581
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0957
_refine_ls_R_factor_gt           0.0506
_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^)+(0.0547P)^2^+1.5264P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1046
_refine_ls_wR_factor_ref         0.1216
_reflns_number_gt                1704
_reflns_number_total             2581
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sk3214.cif
_cod_data_source_block           II
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2016615
_cod_database_fobs_code          2016615