Qualitative and quantitative analysis of intermolecular interactions in xanthenedione derivatives
Purushothaman, Gayathri; Thiruvenkatam, Vijay; Acta Crystallographica Section C 74 (2018) –; doi:10.1107/S205322961800832X

data_2021164
_publ_section_title
;
 Qualitative and quantitative analysis of intermolecular interactions in
 xanthenedione derivatives
;
_journal_coeditor_code           RH3005
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S205322961800832X
_journal_volume                  74
_journal_year                    2018
_chemical_formula_moiety         'C22 H25 N O3'
_chemical_formula_structural     'C22 H25 N O3'
_chemical_formula_sum            'C22 H25 N O3'
_chemical_formula_weight         351.43
_chemical_name_common            Xanthenedione
_chemical_name_systematic
3,3,6,6-Tetramethyl-9-(pyridin-2-yl)-3,4,6,7-tetrahydro-2<i>H</i>-xanthene-1,8(5<i>H</i>,9<i>H</i>)-dione
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                83.057(2)
_cell_angle_beta                 85.272(2)
_cell_angle_gamma                64.888(2)
_cell_formula_units_Z            4
_cell_length_a                   9.2893(11)
_cell_length_b                   10.0558(12)
_cell_length_c                   22.911(3)
_cell_measurement_reflns_used    5671
_cell_measurement_temperature    290(2)
_cell_measurement_theta_max      26.05
_cell_measurement_theta_min      2.34
_cell_volume                     1922.5(4)
_computing_cell_refinement
;
SAINT (Bruker, 2004)
;
_computing_data_collection
;
SMART (Bruker, 2004)
;
_computing_data_reduction
;
SAINT (Bruker, 2004)
;
_computing_molecular_graphics
;
ORTEP-3 for Windows (Farrugia, 2012) and CAMERON (Watkin <i>et al.</i>,
1996)
;
_computing_publication_material
;
PLATON (Spek, 2009)
;
_computing_structure_refinement
;
SHELXL97 (Sheldrick, 2008)
;
_computing_structure_solution
;
SHELXS97 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      290(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0327
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            18985
_diffrn_reflns_reduction_process
;
;
_diffrn_reflns_theta_full        25.5
_diffrn_reflns_theta_max         25.5
_diffrn_reflns_theta_min         0.9
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.08
_exptl_absorpt_correction_T_max  0.9841
_exptl_absorpt_correction_T_min  0.91656
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(SADABS; Bruker, 2004)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.214
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.309
_refine_diff_density_min         -0.242
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     477
_refine_ls_number_reflns         7118
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.0969
_refine_ls_R_factor_gt           0.0767
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0744P)^2^+2.8721P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2145
_refine_ls_wR_factor_ref         0.2229
_reflns_number_gt                5317
_reflns_number_total             7118
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            rh3005sup1.cif
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_cod_database_fobs_code          2021164