Computational and Crystallographic Studies of Pseudo-Polyhalides
Walsh, Rosa D.; Smith, Jessica M.; Hanks, Timothy W.; Pennington, William T.; Crystal Growth & Design 12 (2012) 2759–; doi:10.1021/cg201231t

data_4506133
_publ_section_title
;
 Computational and Crystallographic Studies of Pseudo-Polyhalides
;
_journal_issue                   6
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              2759
_journal_paper_doi               10.1021/cg201231t
_journal_volume                  12
_journal_year                    2012
_chemical_formula_sum            'C27 H52 I7 K O14'
_chemical_formula_weight         1528.09
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           191
_symmetry_space_group_name_Hall  '-P 6 2'
_symmetry_space_group_name_H-M   'P 6/m m m'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            2
_cell_length_a                   14.643(5)
_cell_length_b                   14.643(5)
_cell_length_c                   8.933(3)
_cell_measurement_temperature    293(2)
_cell_volume                     1658.8(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0368
_diffrn_reflns_av_sigmaI/netI    0.0112
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            15942
_diffrn_reflns_theta_full        26.38
_diffrn_reflns_theta_max         26.38
_diffrn_reflns_theta_min         2.78
_exptl_absorpt_coefficient_mu    6.747
_exptl_crystal_density_diffrn    3.059
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1432
_refine_diff_density_max         1.924
_refine_diff_density_min         -1.514
_refine_diff_density_rms         0.388
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     18
_refine_ls_number_reflns         726
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.1175
_refine_ls_R_factor_gt           0.1175
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0100P)^2^+240.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2548
_refine_ls_wR_factor_ref         0.2548
_reflns_number_gt                726
_reflns_number_total             726
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg201231t_si_001.cif
_cod_data_source_block           cd0287a
_cod_database_code               4506133