Cyclic dipeptide peroxosolvates: first direct evidence for hydrogen bonding between hydrogen peroxide and a peptide backbone
Churakov, Andrei V.; Grishanov, Dmitry A.; Medvedev, Alexander G.; Mikhaylov, Alexey A.; Tripol'skaya, Tatiana A.; Vener, Mikhail V.; Navasardyan, Mger A.; Lev, Ovadia; Prikhodchenko, Petr V.; CrystEngComm 21 (2019) 4961–; doi:10.1039/C9CE00892F

data_7233039
_publ_section_title
;
 Cyclic dipeptide peroxosolvates: first direct evidence for hydrogen
 bonding between hydrogen peroxide and a peptide backbone
;
_journal_issue                   33
_journal_name_full               CrystEngComm
_journal_page_first              4961
_journal_paper_doi               10.1039/C9CE00892F
_journal_volume                  21
_journal_year                    2019
_chemical_formula_moiety         'C4 H6 N2 O2, 2(H2 O2)'
_chemical_formula_sum            'C4 H10 N2 O6'
_chemical_formula_weight         182.14
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        '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   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-03-11 deposited with the CCDC.    2019-07-09 downloaded from the CCDC.
;
_cell_angle_alpha                76.505(8)
_cell_angle_beta                 66.440(7)
_cell_angle_gamma                79.984(8)
_cell_formula_units_Z            1
_cell_length_a                   5.654(3)
_cell_length_b                   5.802(3)
_cell_length_c                   6.648(3)
_cell_measurement_reflns_used    991
_cell_measurement_temperature    230(2)
_cell_measurement_theta_max      29.260
_cell_measurement_theta_min      3.400
_cell_volume                     193.59(17)
_computing_cell_refinement       'SAINT (Bruker, 2008)'
_computing_data_collection       '<i>APEX2</i> (Bruker, 2008)'
_computing_data_reduction        'SAINT (Bruker, 2008)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      230(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX II'
_diffrn_measurement_method       \w
_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  0.0227
_diffrn_reflns_av_sigmaI/netI    0.0269
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            1848
_diffrn_reflns_theta_full        26.99
_diffrn_reflns_theta_max         26.99
_diffrn_reflns_theta_min         3.40
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.148
_exptl_absorpt_correction_T_max  0.9883
_exptl_absorpt_correction_T_min  0.9639
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.563
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             96
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.170
_refine_diff_density_min         -0.238
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     94
_refine_ls_number_reflns         850
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0496
_refine_ls_R_factor_gt           0.0417
_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^)+(0.0700P)^2^+0.0259P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1165
_refine_ls_wR_factor_ref         0.1242
_reflns_number_gt                698
_reflns_number_total             850
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c9ce00892f2.cif
_cod_data_source_block           z_CCDC1
_cod_depositor_comments
'Adding full bibliography for 7233037--7233040.cif.'
_cod_original_cell_volume        193.57(17)
_cod_database_code               7233039