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_7031100
_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         'C19 H18 P +,C8 H15 B10 O -'
_chemical_formula_sum            'C27 H33 B10 O P'
_chemical_formula_weight         512.60
_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   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                84.97(1)
_cell_angle_beta                 86.27(1)
_cell_angle_gamma                86.21(1)
_cell_formula_units_Z            2
_cell_length_a                   10.845(1)
_cell_length_b                   11.260(1)
_cell_length_c                   11.511(1)
_cell_measurement_reflns_used    512
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      20
_cell_measurement_theta_min      10
_cell_volume                     1394.7(2)
_computing_cell_refinement       'SMART (Siemens, 1995)'
_computing_data_collection       'SMART (Siemens, 1995)'
_computing_data_reduction        'SAINT (Siemens, 1995)'
_computing_molecular_graphics    'SHELXTL (Bruker, 1998)'
_computing_publication_material  'SHELXTL (Bruker, 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.896
_diffrn_measured_fraction_theta_max 0.896
_diffrn_measurement_device_type  'SMART 1K CCD area detector'
_diffrn_measurement_method       '\w scans'
_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  0.0459
_diffrn_reflns_av_sigmaI/netI    0.0503
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            5922
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         1.78
_exptl_absorpt_coefficient_mu    0.120
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.221
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             536
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.375
_refine_diff_density_min         -0.362
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.338
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     354
_refine_ls_number_reflns         4393
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.338
_refine_ls_R_factor_all          0.1304
_refine_ls_R_factor_gt           0.0980
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+7.2058P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2034
_refine_ls_wR_factor_ref         0.2298
_reflns_number_gt                3415
_reflns_number_total             4393
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b406422d.txt
_cod_data_source_block           2
_cod_database_code               7031100