Succinate esters: odd-even effects in melting points.
Joseph, Sumy; Sathishkumar, Ranganathan; Acta crystallographica Section B, Structural science, crystal engineering and materials 70 (2014) 839–846; doi:10.1107/S2052520614013730

data_2311656
_publ_section_title
;
 Succinate esters: odd-even effects in melting points.
;
_journal_issue                   'Pt 5'
_journal_name_full
'Acta crystallographica Section B, Structural science, crystal engineering and materials'
_journal_page_first              839
_journal_page_last               846
_journal_paper_doi               10.1107/S2052520614013730
_journal_volume                  70
_journal_year                    2014
_chemical_formula_moiety         'C18 H18 O4'
_chemical_formula_sum            'C18 H18 O4'
_chemical_formula_weight         298.32
_chemical_name_common            'Dibenzyl succinate'
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.219(3)
_cell_length_b                   8.260(3)
_cell_length_c                   17.923(5)
_cell_measurement_reflns_used    6096
_cell_measurement_temperature    90
_cell_measurement_theta_max      28.4
_cell_measurement_theta_min      2.3
_cell_volume                     1512.9(8)
_computing_cell_refinement       'Bruker SMART V5.628, (Bruker, 2004)'
_computing_data_collection       'Bruker SMART V5.628, (Bruker, 2004)'
_computing_data_reduction        'Bruker SAINT V6.45a, (Bruker, 2004)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXTL V6.14 (Bruker, 2000)'
_diffrn_ambient_temperature      90
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device_type  'Bruker SMART CCD area detector'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0350
_diffrn_reflns_av_sigmaI/netI    0.0206
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            15033
_diffrn_reflns_reduction_process
;
;
_diffrn_reflns_theta_full        28.36
_diffrn_reflns_theta_max         28.36
_diffrn_reflns_theta_min         2.27
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_T_max  0.973
_exptl_absorpt_correction_T_min  0.969
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.310
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       cylindrical
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.350
_exptl_crystal_size_mid          0.300
_exptl_crystal_size_min          0.300
_refine_diff_density_max         0.400
_refine_diff_density_min         -0.248
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         1810
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0548
_refine_ls_R_factor_gt           0.0501
_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^)+(0.0767P)^2^+0.6113P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1280
_refine_ls_wR_factor_ref         0.1316
_reflns_number_gt                1636
_reflns_number_total             1810
_reflns_threshold_expression     >2\s(i)
_cod_data_source_file            bm5064sup1.cif
_cod_data_source_block           9dibsu
_cod_database_code               2311656