Presence of Short Intermolecular Contacts Screens for Kinetic Stability in Packing Polymorphs.
Purdum, Geoffrey E.; Telesz, Nicholas G.; Jarolimek, Karol; Ryno, Sean M.; Gessner, Thomas; Davy, Nicholas C.; Petty, 2nd, Anthony J; Zhen, Yonggang; Shu, Ying; Facchetti, Antonio; Collis, Gavin E.; Hu, Wenping; Wu, Chao; Anthony, John E.; Weitz, R. Thomas; Risko, Chad; Loo, Yueh-Lin; Journal of the American Chemical Society 140 (2018) 7519–7525; doi:10.1021/jacs.8b01421

data_4132080
_publ_section_title
;
 Presence of Short Intermolecular Contacts Screens for Kinetic Stability
 in Packing Polymorphs.
;
_journal_issue                   24
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7519
_journal_page_last               7525
_journal_paper_doi               10.1021/jacs.8b01421
_journal_volume                  140
_journal_year                    2018
_chemical_formula_moiety         'C24 H24 Cl2 N2 O4'
_chemical_formula_sum            'C24 H24 Cl2 N2 O4'
_chemical_formula_weight         475.35
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'SHELXL-2014/7 and CIFFIX'
_cell_angle_alpha                90
_cell_angle_beta                 110.040(1)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.0689(1)
_cell_length_b                   35.6007(8)
_cell_length_c                   6.3931(2)
_cell_measurement_reflns_used    8303
_cell_measurement_temperature    90.0(2)
_cell_measurement_theta_max      68.37
_cell_measurement_theta_min      2.48
_cell_volume                     1083.82(5)
_computing_cell_refinement       '<i>APEX2</i> (Bruker-AXS, 2006)'
_computing_data_collection       '<i>APEX2</i> (Bruker-AXS, 2006)'
_computing_data_reduction        '<i>APEX2</i> (Bruker-AXS, 2006)'
_computing_molecular_graphics    '<i>XP in SHELXTL</i> (Sheldrick, 2008)'
_computing_publication_material
'<i>SHELX</i> (Sheldrick, 2008) and <i>CIFFIX</i> (Parkin, 2013)'
_computing_structure_refinement  '<i>SHELXL-2014/7</i> (Sheldrick, 2015b)'
_computing_structure_solution    '<i>SHELXT</i> (Sheldrick, 2015a)'
_diffrn_ambient_temperature      90.0(2)
_diffrn_detector_area_resol_mean 5.6
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Bruker X8 Proteum diffractometer'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0495
_diffrn_reflns_av_unetI/netI     0.0314
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.988
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -2
_diffrn_reflns_limit_k_max       42
_diffrn_reflns_limit_k_min       -42
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            13040
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.988
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.367
_diffrn_reflns_theta_min         2.482
_diffrn_source                   'fine-focus rotating anode'
_exptl_absorpt_coefficient_mu    2.992
_exptl_absorpt_correction_T_max  0.852
_exptl_absorpt_correction_T_min  0.661
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '<i>SADABS</i> (Krause et al., 2015)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.457
_exptl_crystal_description       flake
_exptl_crystal_F_000             496
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.160
_exptl_crystal_size_min          0.010
_refine_diff_density_max         0.376
_refine_diff_density_min         -0.384
_refine_diff_density_rms         0.083
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.124
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     146
_refine_ls_number_reflns         1958
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.124
_refine_ls_R_factor_all          0.0494
_refine_ls_R_factor_gt           0.0469
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0695P)^2^+1.7397P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1384
_refine_ls_wR_factor_ref         0.1402
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1826
_reflns_number_total             1958
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b01421_si_003.cif
_cod_data_source_block           x16033
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4132080
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.522
_shelx_estimated_absorpt_t_max   0.971
_exptl_absorpt_special_details
; 
In addition to absorption, multi-scan techniques also correct other slowly 
varying changes in scale factor over reciprocal space, such as those caused 
by x-ray beam inhomogeneity, goniometer imperfection, crystal decomposition, 
crystal longer than the x-ray beam cross section, absorption by the crystal 
mount etc.  These account, by and large, for much of the difference between 
estimated values of Tmin and Tmax and the _exptl_absorpt_correction_ values. 
;
_shelx_res_checksum              26893
_shelx_hkl_checksum              57285