Structural Chemistry of arachno-Nonaboranes
Jonathan Bould; Robert Greatrex; John D. Kennedy; Daniel L. Ormsby; Michael G. S. Londesborough; Karen L. F. Callaghan; Mark Thornton-Pett; Trevor R. Spalding; Simon J. Teat; William Clegg; Hong Fang; Nigam P. Rath; Lawrence Barton; Journal of the American Chemical Society 124 (2002) 7429–7439; doi:10.1021/ja025700d

data_4114897
_publ_section_title
;
 Structural Chemistry of arachno-Nonaboranes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7429
_journal_page_last               7439
_journal_paper_doi               10.1021/ja025700d
_journal_volume                  124
_journal_year                    2002
_chemical_formula_sum            'B9 H14 K'
_chemical_formula_weight         150.50
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 95.09(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.7170(15)
_cell_length_b                   11.674(2)
_cell_length_c                   10.054(2)
_cell_measurement_reflns_used    26
_cell_measurement_temperature    143(2)
_cell_measurement_theta_max      14.2
_cell_measurement_theta_min      7.3
_cell_volume                     902.2(3)
_computing_cell_refinement       'Siemens P3'
_computing_data_collection       'Siemens P3'
_computing_data_reduction        'Siemens SHELXTL'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      143(2)
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_method       '\w/\2q scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0315
_diffrn_reflns_av_sigmaI/netI    0.0384
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            5153
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.65
_diffrn_standards_decay_%        3.83
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.496
_exptl_absorpt_correction_T_max  0.9073
_exptl_absorpt_correction_T_min  0.8655
_exptl_absorpt_correction_type   semi-empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.108
_exptl_crystal_description       rectangular
_exptl_crystal_F_000             312
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.271
_refine_diff_density_min         -0.152
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     147
_refine_ls_number_reflns         2559
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0444
_refine_ls_R_factor_gt           0.0302
_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^)+(0.0323P)^2^+0.0347P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0632
_refine_ls_wR_factor_ref         0.0678
_reflns_number_gt                2091
_reflns_number_total             2559
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja025700d_s2_2.cif
_cod_data_source_block           lb595
_cod_original_formula_sum        'H14 B9 K'
_cod_database_code               4114897