Icosahedral galloxane clusters
McKinlay, Robert M.; Dalgarno, Scott J.; Nichols, Peter J.; Papadopoulos, Stavroula; Atwood, Jerry L.; Raston, Colin L.; Chemical Communications (Cambridge, United Kingdom)  (2007) 2393–2395; doi:10.1039/b700984d

data_7101977
_publ_section_title
;
 Icosahedral galloxane clusters
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   23
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              2393
_journal_page_last               2395
_journal_paper_doi               10.1039/b700984d
_journal_year                    2007
_chemical_formula_moiety         'C6 H15 Ga2 O3'
_chemical_formula_sum            'C6 H15 Ga2 O3'
_chemical_formula_weight         274.62
_chemical_name_common            Isopropylgalloxane
_space_group_IT_number           205
_symmetry_cell_setting           cubic
_symmetry_space_group_name_Hall  '-P 2ac 2ab 3'
_symmetry_space_group_name_H-M   'P a -3'
_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            24
_cell_length_a                   19.044(3)
_cell_length_b                   19.044(2)
_cell_length_c                   19.044(2)
_cell_measurement_temperature    123(2)
_cell_volume                     6906.2(14)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1996)'
_computing_data_collection       'COLLECT (Nonius, 1999)'
_computing_data_reduction        'DENZO-SMN (Otwinowski & Minor, 1996)'
_computing_molecular_graphics
;
XSeed (Barbour, 2001)
;
_computing_publication_material  'local program'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type
'Nonius KappaCCD area detector diffractometer'
_diffrn_measurement_method
;
Detector set at 30mm from sample with different 2theta offsets
1 degree phi exposures for chi=0 degree settings
1 degree omega exposures for chi=90 degree settings
;
_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  0.0269
_diffrn_reflns_av_sigmaI/netI    0.0495
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            5024
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    4.648
_exptl_absorpt_correction_T_max  0.4566
_exptl_absorpt_correction_T_min  0.3895
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Using multiple and symmetry-related data measurements via the program SORTAV
See R.H. Blessing, Acta Cryst (1995), A51, 33-38
;
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.585
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             3288
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.175
_refine_diff_density_min         -0.840
_refine_diff_density_rms         0.167
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.080
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     95
_refine_ls_number_reflns         2836
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.086
_refine_ls_R_factor_all          0.1027
_refine_ls_R_factor_gt           0.0661
_refine_ls_shift/su_max          0.060
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1261P)^2^+0.0871P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1856
_refine_ls_wR_factor_ref         0.2064
_reflns_number_gt                1789
_reflns_number_total             2836
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b700984d.txt
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Cubic' changed to 'cubic' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      Pa-3
_cod_database_code               7101977