The monohydrates of the four polar dipeptides <small>L</small>-seryl-<small>L</small>-asparagine, <small>L</small>-seryl-<small>L</small>-tyrosine, <small>L</small>-tryptophanyl-<small>L</small>-serine and <small>L</small>-tyrosyl-<small>L</small>-tryptophan
Görbitz, Carl Henrik; Hartviksen, Lars Male; Acta Crystallographica Section C 64 (2008) o171–o176; doi:10.1107/S0108270108004228

data_2016490
_publ_section_title
;
 The monohydrates of the four polar dipeptides
 <small>L</small>-seryl-<small>L</small>-asparagine,
 <small>L</small>-seryl-<small>L</small>-tyrosine,
 <small>L</small>-tryptophanyl-<small>L</small>-serine and
 <small>L</small>-tyrosyl-<small>L</small>-tryptophan
;
_journal_coeditor_code           GG3137
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o171
_journal_page_last               o176
_journal_paper_doi               10.1107/S0108270108004228
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C7 H13 N3 O5, H2 O'
_chemical_formula_moiety         'C7 H13 N3 O5, H2 O'
_chemical_formula_sum            'C7 H15 N3 O6'
_chemical_formula_weight         237.22
_chemical_name_systematic
;
L-Seryl-L-asparagine monohydrate
;
_space_group_IT_number           1
_space_group_name_Hall           'P 1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                115.6910(10)
_cell_angle_beta                 90.2660(10)
_cell_angle_gamma                104.9570(10)
_cell_formula_units_Z            1
_cell_length_a                   4.75470(10)
_cell_length_b                   7.5121(2)
_cell_length_c                   8.5626(2)
_cell_measurement_reflns_used    2419
_cell_measurement_temperature    105(2)
_cell_measurement_theta_max      28.3
_cell_measurement_theta_min      2.7
_cell_volume                     263.870(11)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        'SAINT (Bruker, 2001)'
_computing_molecular_graphics    'SHELXTL (Version 6.10; Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Version 6.10; Sheldrick, 2008)'
_computing_structure_refinement  'SHELXTL (Version 6.10; Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Version 6.10; Sheldrick, 2008)'
_diffrn_ambient_temperature      105(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Siemens SMART CCD diffractometer'
_diffrn_measurement_method
'Sets of exposures each taken over 0.3\% \w rotation'
_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  0.0165
_diffrn_reflns_av_sigmaI/netI    0.0233
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            2522
_diffrn_reflns_theta_full        28.31
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         2.66
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.130
_exptl_absorpt_correction_T_max  0.9743
_exptl_absorpt_correction_T_min  0.8381
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.493
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             126
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.291
_refine_diff_density_min         -0.208
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.089
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         1289
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.087
_refine_ls_R_factor_all          0.0254
_refine_ls_R_factor_gt           0.0253
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0446P)^2^+0.0335P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0668
_refine_ls_wR_factor_ref         0.0669
_reflns_number_gt                1281
_reflns_number_total             1289
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gg3137.cif
_cod_data_source_block           SN
_cod_database_code               2016490
_cod_database_fobs_code          2016490