The reaction of "GaI" with a 1,3-diyne: synthesis, characterisation and reactivity of a novel C‒C coupled ene‒diyne‒bis(gem-organodigallium(III)) complex
Baker, Robert J.; Jones, Cameron; Chemical Communications (Cambridge, United Kingdom)  (2003) 390–391; doi:10.1039/b210868m

data_7103953
_publ_section_title
;
 The reaction of "GaI" with a 1,3-diyne: synthesis, characterisation and
 reactivity of a novel C--C coupled ene--diyne--bis(gem-organodigallium(III))
 complex
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   3
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              390
_journal_page_last               391
_journal_paper_doi               10.1039/b210868m
_journal_year                    2003
_chemical_formula_sum            'C20 H36 Ga4 I8 Si4'
_chemical_formula_weight         1682.93
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   19.676(4)
_cell_length_b                   20.606(4)
_cell_length_c                   21.642(4)
_cell_measurement_temperature    150(2)
_cell_volume                     8775(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_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  0.1580
_diffrn_reflns_av_sigmaI/netI    0.0737
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            81643
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.92
_exptl_absorpt_coefficient_mu    8.181
_exptl_absorpt_correction_T_max  0.90
_exptl_absorpt_correction_T_min  0.55
_exptl_absorpt_correction_type   'Sortav (Blessing)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.548
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             6080
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.941
_refine_diff_density_min         -0.874
_refine_diff_density_rms         0.196
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     337
_refine_ls_number_reflns         7739
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.0792
_refine_ls_R_factor_gt           0.0471
_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^)+(0.0065P)^2^+51.6759P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0823
_refine_ls_wR_factor_ref         0.0914
_reflns_number_gt                5736
_reflns_number_total             7739
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b210868m.txt
_cod_data_source_block           compound_3
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7103953