Conformational preferences in a series of α-hydroxy-ketone derivatives: Interplay of conformational energies and lattice cohesive energies
Insan, Sandeep; Sudheendranath, Athul; Venugoplan, Paloth; Kumar, Anil; Thomas, Sajesh P.; CrystEngComm  (2022) –; doi:10.1039/D2CE00700B

data_7245248
_publ_section_title
;
 Conformational preferences in a series of \a-hydroxy-ketone derivatives:
 Interplay of conformational energies and lattice cohesive energies
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/D2CE00700B
_journal_year                    2022
_chemical_formula_moiety         'C24 H18 O2'
_chemical_formula_sum            'C24 H18 O2'
_chemical_formula_weight         338.38
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2022-03-01
_audit_creation_method
;
Olex2 1.5
(compiled 2021.12.09 svn.r5202d8cf for OlexSys, GUI svn.r6439)
;
_audit_update_record
;
2022-03-09 deposited with the CCDC.	2022-08-02 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 110.560(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.0420(4)
_cell_length_b                   18.3274(5)
_cell_length_c                   11.5796(4)
_cell_measurement_reflns_used    20986
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      4
_cell_volume                     1796.70(12)
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2016/4 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXS  (Sheldrick, 2008)'
_diffrn_ambient_temperature      293
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Super Nova'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0664
_diffrn_reflns_av_unetI/netI     0.0414
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            20986
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.000
_diffrn_reflns_theta_min         3.276
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  0.989
_exptl_absorpt_correction_T_min  0.983
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.251
_exptl_crystal_description       block
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.376
_refine_diff_density_min         -0.252
_refine_diff_density_rms         0.040
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.126
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         3149
_refine_ls_number_restraints     9
_refine_ls_restrained_S_all      1.127
_refine_ls_R_factor_all          0.0906
_refine_ls_R_factor_gt           0.0589
_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^)+(0.0778P)^2^+0.3310P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1585
_refine_ls_wR_factor_ref         0.1759
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2065
_reflns_number_total             3149
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2ce00700b2.cif
_cod_data_source_block           venu8
_cod_database_code               7245248
_shelx_shelxl_version_number     2016/4
_shelx_estimated_absorpt_t_max   0.990
_shelx_estimated_absorpt_t_min   0.978
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All O(H) groups
2. Rigid body (RIGU) restrains
 C10, C11, C12
 with sigma for 1-2 distances of 0.004 and sigma for 1-3 distances of 0.004
3.a Aromatic/amide H refined with riding coordinates:
 C2(H2a), C3(H3), C4(H4), C5(H5), C6(H6), C10(H10), C11(H11), C13(H13),
 C14(H14), C15(H15), C16(H16), C18(H18), C20(H20), C21(H21), C22(H22), C23(H23),
  C24(H24)
3.b Idealised tetrahedral OH refined with riding coordinates:
 O2(H2)
;
_shelx_res_checksum              82734
_shelx_hkl_checksum              56896
_olex2_submission_special_instructions 'No special instructions were received'