Exo-pi-bonding to an ortho-carborane hypercarbon atom: systematic icosahedral cage distortions reflected in the structures of the fluoro-, hydroxy- and amino-carboranes, 1-X-2-Ph-1,2-C2B10H10 (X=F, OH or NH2) and related anions.
Boyd, Lynn A.; Clegg, William; Copley, Royston C. B.; Davidson, Matthew G.; Fox, Mark A.; Hibbert, Thomas G.; Howard, Judith A. K.; Mackinnon, Angus; Peace, Richard J.; Wade, Kenneth; Dalton transactions (Cambridge, England : 2003)  (2004) 2786–2799; doi:10.1039/B406422D

data_7031103
_publ_section_title
;
 Exo-pi-bonding to an ortho-carborane hypercarbon atom: systematic
 icosahedral cage distortions reflected in the structures of the fluoro-,
 hydroxy- and amino-carboranes, 1-X-2-Ph-1,2-C2B10H10 (X=F, OH or NH2) and
 related anions.
;
_journal_issue                   17
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2786
_journal_page_last               2799
_journal_paper_doi               10.1039/B406422D
_journal_year                    2004
_chemical_formula_moiety         'C16 H30 B20 S3'
_chemical_formula_sum            'C16 H30 B20 S3'
_chemical_formula_weight         534.78
_chemical_name_systematic
;
?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.0923(3)
_cell_length_b                   14.8660(7)
_cell_length_c                   24.1238(8)
_cell_measurement_reflns_used    32
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      29.60
_cell_measurement_theta_min      23.34
_cell_volume                     2902.1(2)
_computing_cell_refinement       'Stoe DIF4'
_computing_data_collection       'Stoe DIF4'
_computing_data_reduction        'local programs'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL and local programs'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Stoe-Siemens diffractometer'
_diffrn_measurement_method       '\w/\q scans with on-line profile fitting'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0173
_diffrn_reflns_av_sigmaI/netI    0.0281
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            6796
_diffrn_reflns_theta_full        64.97
_diffrn_reflns_theta_max         64.97
_diffrn_reflns_theta_min         3.49
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    2.370
_exptl_absorpt_correction_T_max  0.56
_exptl_absorpt_correction_T_min  0.40
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.224
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1096
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.154
_refine_diff_density_min         -0.195
_refine_diff_density_rms         0.034
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.012(16)
_refine_ls_extinction_coef       0.00155(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     353
_refine_ls_number_reflns         4793
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0386
_refine_ls_R_factor_gt           0.0317
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0431P)^2^+0.7250P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0837
_refine_ls_wR_factor_ref         0.0903
_reflns_number_gt                4351
_reflns_number_total             4793
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b406422d.txt
_cod_data_source_block           5
_cod_database_code               7031103