Managing negative linear compressibility and thermal expansion through steric hindrance: a case study of 1,2-bis(4'-pyridyl)ethane cocrystals.
Patyk-Kaźmierczak, Ewa; Szymańska, Kornelia; Kaźmierczak, Michał; IUCrJ 12 (2025) –; doi:10.1107/S2052252524011734

data_1573493
_publ_section_title
;
 Managing negative linear compressibility and thermal expansion through
 steric hindrance: a case study of 1,2-bis(4'-pyridyl)ethane cocrystals.
;
_journal_issue                   1
_journal_name_full               IUCrJ
_journal_paper_doi               10.1107/S2052252524011734
_journal_volume                  12
_journal_year                    2025
_chemical_formula_moiety         'C12 H12 N2, C4 H4 O4'
_chemical_formula_sum            'C16 H16 N2 O4'
_chemical_formula_weight         300.31
_chemical_name_systematic        '1,2-bis(4-Pyridyl)ethane fumaric acid'
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-I 2ya'
_space_group_name_H-M_alt        'I 1 2/a 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     dual
_audit_creation_date             2023-10-19
_audit_creation_method
;
Olex2 1.5
(compiled 2023.08.24 svn.re1ec1418 for OlexSys, GUI svn.r6817)
;
_cell_angle_alpha                90
_cell_angle_beta                 109.367(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.6906(9)
_cell_length_b                   4.7903(2)
_cell_length_c                   19.6824(9)
_cell_measurement_reflns_used    1500
_cell_measurement_temperature    249.9(2)
_cell_measurement_theta_max      71.7080
_cell_measurement_theta_min      4.7420
_cell_volume                     1484.62(13)
_computing_cell_refinement       'CrysAlisPro 1.171.41.93a (Rigaku OD, 2020)'
_computing_data_collection       'CrysAlisPro 1.171.41.93a (Rigaku OD, 2020)'
_computing_data_reduction        'CrysAlisPro 1.171.41.93a (Rigaku OD, 2020)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2014/7 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/4 (Sheldrick, 2014)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      249.9(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.5384
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.979
_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     61.00  94.00   1.00    2.00    --   40.98-125.00 120.00   33
  2  \w    -27.00  50.00   1.00    2.00    --   40.98 -57.00  60.00   77
  3  \w    -38.00  25.00   1.00    2.00    --   40.98 -19.00 120.00   63
  4  \w    -22.00  20.00   1.00    2.00    --   40.98 -37.00   0.00   42
  5  \w     84.00 156.00   1.00    3.00    --  103.83 111.00 120.00   72
  6  \w     32.00  63.00   1.00    3.00    --  103.83 -61.00  90.00   31
  7  \w     32.00  64.00   1.00    3.00    --  103.83 -61.00-120.00   32
  8  \w     22.00  90.00   1.00    3.00    --  103.83 -94.00-180.00   68
  9  \w     27.00 106.00   1.00    3.00    --  103.83 -94.00  90.00   79
 10  \w     54.00 108.00   1.00    3.00    --  103.83-111.00  60.00   54
 11  \w     87.00 158.00   1.00    3.00    --  103.83  77.00  30.00   71
 12  \w    114.00 141.00   1.00    3.00    --  103.83  77.00 -60.00   27
 13  \w     93.00 139.00   1.00    3.00    --  103.83  77.00 120.00   46
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Single source at offset/far, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0877341000
_diffrn_orient_matrix_UB_12      -0.0054216000
_diffrn_orient_matrix_UB_13      -0.0592855000
_diffrn_orient_matrix_UB_21      -0.0066005000
_diffrn_orient_matrix_UB_22      -0.3158964000
_diffrn_orient_matrix_UB_23      0.0116046000
_diffrn_orient_matrix_UB_31      -0.0429429000
_diffrn_orient_matrix_UB_32      0.0593905000
_diffrn_orient_matrix_UB_33      0.0567986000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0254
_diffrn_reflns_av_unetI/netI     0.0282
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.979
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            2821
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.979
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         72.139
_diffrn_reflns_theta_min         4.763
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    0.811
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.599
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.41.93a (Rigaku Oxford Diffraction, 2020)
Numerical absorption correction based on gaussian integration over
a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.344
_exptl_crystal_description       plate
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.147
_refine_diff_density_min         -0.135
_refine_diff_density_rms         0.034
_refine_ls_extinction_coef       0.0014(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     133
_refine_ls_number_reflns         1432
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0472
_refine_ls_R_factor_gt           0.0349
_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^)+(0.0476P)^2^+0.2145P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0889
_refine_ls_wR_factor_ref         0.0986
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1131
_reflns_number_total             1432
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            yc5049.cif
_cod_data_source_block           ETYFUM_250K
_cod_database_code               1573493
_shelx_shelxl_version_number     2014/7
_chemical_oxdiff_formula         'C4O4H4, N2C12H12'
_shelx_estimated_absorpt_t_max   0.961
_shelx_estimated_absorpt_t_min   0.817
_olex2_refinement_description
;
;
_shelx_res_checksum              36658
_shelx_hkl_checksum              24542
_ins_header
;
TITL ETYFUM_250 in I2/a 
REM I2/a (#15 in standard setting)
CELL 1.54184  16.690645   4.790276  19.682423  90.0000 109.3674  90.0000
ZERR    4.00   0.000851   0.000232   0.000875   0.0000   0.0052   0.0000
LATT  2
SYMM -x+1/2, y,-z 
SFAC C H N O
UNIT 64.00 64.00 8.00 16.00
REM  CrysAlisPro recorded range (K): Min=249.8; max=250.1; aver:249.9
TEMP -23
SIZE 0.05 0.14 0.26
TREF
HKLF 4
END
;
_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
;
_oxdiff_exptl_absorpt_empirical_full_max 1.234
_oxdiff_exptl_absorpt_empirical_full_min 0.776