Discovery and exploration of new solid forms of dipeptide: l-alanyl-l-glutamine
Fu, Jinqiu; Cai, Mengyang; Shi, Yuzhong; Hou, Yihang; Guo, Rongxi; Wang, Chiyi; Zhao, Jingjing; Zhuang, Wei; Ying, Hanjie; Yang, Pengpeng; Zhang, Keke; CrystEngComm 26 (2024) 943–950; doi:10.1039/D3CE00957B

data_7247957
_publ_section_title
;
 Discovery and exploration of new solid forms of dipeptide:
 l-alanyl-l-glutamine
;
_journal_issue                   7
_journal_name_full               CrystEngComm
_journal_page_first              943
_journal_page_last               950
_journal_paper_doi               10.1039/D3CE00957B
_journal_volume                  26
_journal_year                    2024
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C8 H15 N3 O4, 2(H2 O)'
_chemical_formula_sum            'C8 H19 N3 O6'
_chemical_formula_weight         253.26
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2022-06-18
_audit_creation_method
;
Olex2 1.5
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_audit_update_record
;
2023-11-10 deposited with the CCDC.	2024-01-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.0124(3)
_cell_length_b                   15.2769(10)
_cell_length_c                   16.3628(10)
_cell_measurement_reflns_used    5733
_cell_measurement_temperature    294.15
_cell_measurement_theta_max      31.6230
_cell_measurement_theta_min      2.5210
_cell_volume                     1252.96(13)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      294.15
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.941
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w   -115.00  65.00   1.00    8.00    --  -25.00  45.00   0.00  180
  2  \w   -115.00  35.00   1.00    8.00    --  -25.00  45.00  90.00  150
  3  \w   -115.00   5.00   1.00    8.00    --  -25.00  45.00 180.00  120
;
_diffrn_measurement_device       'abstract diffractometer'
_diffrn_measurement_device_type  'Rigaku mm007 Saturn70'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0020855000
_diffrn_orient_matrix_UB_12      -0.0461754000
_diffrn_orient_matrix_UB_13      -0.0045839000
_diffrn_orient_matrix_UB_21      0.0098273000
_diffrn_orient_matrix_UB_22      -0.0049618000
_diffrn_orient_matrix_UB_23      0.0429842000
_diffrn_orient_matrix_UB_31      -0.1411510000
_diffrn_orient_matrix_UB_32      0.0003247000
_diffrn_orient_matrix_UB_33      0.0030675000
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0683
_diffrn_reflns_av_unetI/netI     0.0707
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.941
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            15740
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.907
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         32.907
_diffrn_reflns_theta_min         2.824
_diffrn_source                   'rotating anode'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.114
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.67393
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_description       block
_exptl_crystal_F_000             544
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.220
_refine_diff_density_min         -0.177
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details
;
 Flack x determined using 765 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -1.1(10)
_refine_ls_extinction_coef       0.032(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     180
_refine_ls_number_reflns         4257
_refine_ls_number_restraints     13
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0928
_refine_ls_R_factor_gt           0.0559
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0503P)^2^+0.0169P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1100
_refine_ls_wR_factor_ref         0.1313
_reflns_Friedel_coverage         0.671
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.861
_reflns_number_gt                2861
_reflns_number_total             4257
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3ce00957b2.cif
_cod_data_source_block           r20220617c
_cod_depositor_comments
'Adding full bibliography for 7247952--7247957.cif.'
_cod_database_code               7247957
_shelx_shelxl_version_number     2018/3
_chemical_oxdiff_formula         'C11 H10 N O'
_shelx_estimated_absorpt_t_max   0.989
_shelx_estimated_absorpt_t_min   0.972
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H,H) groups, All N(H,H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H,H) groups
2. Restrained distances
 N2-H2
 0.9 with sigma of 0.01
3. Uiso/Uaniso restraints and constraints
Uanis(O6) \\sim Ueq, Uanis(O7) \\sim Ueq: with sigma of 0.01 and sigma for
terminal atoms of 0.02
4. Others
 Sof(O7)=Sof(H7C)=Sof(H7D)=1-FVAR(1)
 Sof(O6)=Sof(H6C)=Sof(H6D)=FVAR(1)
5.a Free rotating group:
 O5(H5A,H5B), O6(H6C,H6D), O7(H7C,H7D)
5.b Ternary CH refined with riding coordinates:
 C2(H2A), C4(H4)
5.c Secondary CH2 refined with riding coordinates:
 C6(H6A,H6B), C7(H7A,H7B)
5.d X=CH2 refined with riding coordinates:
 N3(H3A,H3B)
5.e Idealised Me refined as rotating group:
 N1(H1A,H1B,H1C), C1(H1D,H1E,H1F)
;
_shelx_res_checksum              48435
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
- Detector area scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 2.519
_oxdiff_exptl_absorpt_empirical_full_min 0.592