# Supplementary Material (ESI) for ChemComm # This journal is © The Royal Society of Chemistry 2000 # CCDC Number: 182/1689 data_lus8 _audit_creation_method SHELXL-97 _chemical_name_systematic ; Octamethyl-dialuminadiazanorbornane ; _chemical_name_common ? _chemical_melting_point ? _chemical_formula_moiety ? _chemical_formula_sum 'C9 H24 Al2 N2' _chemical_formula_weight 214.26 loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source 'C' 'C' 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 'H' 'H' 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 'N' 'N' 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 'Al' 'Al' 0.0645 0.0514 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' _symmetry_cell_setting Monoclinic _symmetry_space_group_name_H-M P2/n loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x+1/2, y, -z+1/2' '-x, -y, -z' 'x-1/2, -y, z-1/2' _cell_length_a 7.802(2) _cell_length_b 7.351(1) _cell_length_c 11.923(2) _cell_angle_alpha 90.00 _cell_angle_beta 101.36(1) _cell_angle_gamma 90.00 _cell_volume 670.4(2) _cell_formula_units_Z 2 _cell_measurement_temperature 143(2) _cell_measurement_reflns_used 92 _cell_measurement_theta_min 19 _cell_measurement_theta_max 24 _exptl_crystal_description Block _exptl_crystal_colour Colourless _exptl_crystal_size_max 0.60 _exptl_crystal_size_mid 0.40 _exptl_crystal_size_min 0.30 _exptl_crystal_density_meas ? _exptl_crystal_density_diffrn 1.061 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 236 _exptl_absorpt_coefficient_mu 0.184 _exptl_absorpt_correction_type None _exptl_absorpt_correction_T_min 0.8978 _exptl_absorpt_correction_T_max 0.9470 _exptl_absorpt_process_details ? _exptl_special_details ; ? ; _diffrn_ambient_temperature 143(2) _diffrn_radiation_wavelength 0.71073 _diffrn_radiation_type MoK\a _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_monochromator graphite _diffrn_measurement_device_type 'Enaraf Nonius CAD4' _diffrn_measurement_method omega _diffrn_detector_area_resol_mean ? _diffrn_standards_number 3 _diffrn_standards_interval_count ? _diffrn_standards_interval_time 60 _diffrn_standards_decay_% None _diffrn_reflns_number 2067 _diffrn_reflns_av_R_equivalents 0.0108 _diffrn_reflns_av_sigmaI/netI 0.0133 _diffrn_reflns_limit_h_min -9 _diffrn_reflns_limit_h_max 9 _diffrn_reflns_limit_k_min 0 _diffrn_reflns_limit_k_max 9 _diffrn_reflns_limit_l_min -15 _diffrn_reflns_limit_l_max 4 _diffrn_reflns_theta_min 2.77 _diffrn_reflns_theta_max 26.99 _reflns_number_total 1463 _reflns_number_gt 1347 _reflns_threshold_expression >2sigma(I) _computing_data_collection 'CAD4 Software' _computing_cell_refinement 'CAD4 Software' _computing_data_reduction 'CADSHEL' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1990)' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_molecular_graphics 'SHELXTL 5.01' _computing_publication_material 'SHELXTL 5.01' _refine_special_details ; Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. ; _refine_ls_structure_factor_coef Fsqd _refine_ls_matrix_type full _refine_ls_weighting_scheme calc _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0393P)^2^+0.1432P] where P=(Fo^2^+2Fc^2^)/3' _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _atom_sites_solution_hydrogens difmap _refine_ls_hydrogen_treatment refall _refine_ls_extinction_method none _refine_ls_extinction_coef ? _refine_ls_number_reflns 1463 _refine_ls_number_parameters 108 _refine_ls_number_restraints 0 _refine_ls_R_factor_all 0.0264 _refine_ls_R_factor_gt 0.0232 _refine_ls_wR_factor_ref 0.0691 _refine_ls_wR_factor_gt 0.0672 _refine_ls_goodness_of_fit_ref 1.076 _refine_ls_restrained_S_all 1.076 _refine_ls_shift/su_max 0.001 _refine_ls_shift/su_mean 0.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_occupancy _atom_site_symmetry_multiplicity _atom_site_calc_flag _atom_site_refinement_flags _atom_site_disorder_assembly _atom_site_disorder_group Al Al 0.21669(4) 0.85319(4) 0.59575(2) 0.02026(12) Uani 1 1 d . . . N N 0.37626(10) 0.69164(11) 0.70873(7) 0.01869(18) Uani 1 1 d . . . C1 C 0.2500 0.57071(18) 0.7500 0.0198(3) Uani 1 2 d S . . H13 H 0.1895(15) 0.4950(16) 0.6880(10) 0.022(3) Uiso 1 1 d . . . C2 C 0.03309(12) 0.80231(14) 0.68968(8) 0.0220(2) Uani 1 1 d . . . H22 H -0.0585(17) 0.7241(18) 0.6476(10) 0.027(3) Uiso 1 1 d . . . H21 H -0.0221(17) 0.9058(19) 0.7186(11) 0.028(3) Uiso 1 1 d . . . C3 C 0.50156(14) 0.58097(15) 0.65902(9) 0.0258(2) Uani 1 1 d . . . H33 H 0.4409(16) 0.5097(19) 0.5965(11) 0.029(3) Uiso 1 1 d . . . H32 H 0.582(2) 0.663(2) 0.6321(12) 0.038(4) Uiso 1 1 d . . . H31 H 0.5694(17) 0.4985(19) 0.7172(12) 0.033(3) Uiso 1 1 d . . . C4 C 0.17071(16) 0.72249(17) 0.44856(9) 0.0304(2) Uani 1 1 d . . . H43 H 0.071(2) 0.772(2) 0.3978(14) 0.056(5) Uiso 1 1 d . . . H42 H 0.146(2) 0.597(2) 0.4548(15) 0.053(4) Uiso 1 1 d . . . H41 H 0.263(2) 0.731(3) 0.4127(14) 0.062(5) Uiso 1 1 d . . . C5 C 0.31919(16) 1.09678(15) 0.59440(10) 0.0299(2) Uani 1 1 d . . . H53 H 0.336(2) 1.156(2) 0.6643(16) 0.055(5) Uiso 1 1 d . . . H52 H 0.250(2) 1.168(2) 0.5435(16) 0.061(5) Uiso 1 1 d . . . H51 H 0.430(2) 1.088(3) 0.5750(15) 0.059(5) Uiso 1 1 d . . . loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_23 _atom_site_aniso_U_13 _atom_site_aniso_U_12 Al 0.02266(18) 0.01983(18) 0.01873(17) 0.00150(10) 0.00519(11) -0.00019(10) N 0.0185(4) 0.0184(4) 0.0202(4) -0.0015(3) 0.0063(3) 0.0000(3) C1 0.0222(6) 0.0164(6) 0.0217(6) 0.000 0.0065(5) 0.000 C2 0.0200(4) 0.0237(5) 0.0218(5) 0.0025(4) 0.0031(3) 0.0022(4) C3 0.0249(5) 0.0265(5) 0.0285(5) -0.0019(4) 0.0111(4) 0.0049(4) C4 0.0337(6) 0.0347(6) 0.0226(5) -0.0030(4) 0.0048(4) -0.0007(5) C5 0.0361(6) 0.0227(5) 0.0329(6) 0.0040(4) 0.0114(5) -0.0021(4) _geom_special_details ; All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. ; loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance _geom_bond_site_symmetry_2 _geom_bond_publ_flag Al C5 1.9624(12) . ? Al C4 1.9707(12) . ? Al C2 2.0195(11) . ? Al N 2.0284(9) . ? N C1 1.4811(11) . ? N C3 1.4823(12) . ? N C2 1.5138(12) 2_556 ? C1 N 1.4811(11) 2_556 ? C1 H13 0.971(12) . ? C2 N 1.5138(12) 2_556 ? C2 H22 0.976(13) . ? C2 H21 0.970(14) . ? C3 H33 0.957(14) . ? C3 H32 0.968(16) . ? C3 H31 0.992(14) . ? C4 H43 0.958(18) . ? C4 H42 0.946(18) . ? C4 H41 0.909(19) . ? C5 H53 0.927(18) . ? C5 H52 0.895(18) . ? C5 H51 0.938(19) . ? loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle _geom_angle_site_symmetry_1 _geom_angle_site_symmetry_3 _geom_angle_publ_flag C5 Al C4 116.14(5) . . ? C5 Al C2 120.55(5) . . ? C4 Al C2 112.27(5) . . ? C5 Al N 109.99(5) . . ? C4 Al N 106.63(5) . . ? C2 Al N 86.15(4) . . ? C1 N C3 109.73(8) . . ? C1 N C2 107.05(6) . 2_556 ? C3 N C2 111.96(8) . 2_556 ? C1 N Al 102.16(5) . . ? C3 N Al 115.00(6) . . ? C2 N Al 110.22(6) 2_556 . ? N C1 N 106.23(11) . 2_556 ? N C1 H13 110.3(7) . . ? N C1 H13 110.0(7) 2_556 . ? N C2 Al 105.82(6) 2_556 . ? N C2 H22 105.9(7) 2_556 . ? Al C2 H22 110.6(7) . . ? N C2 H21 107.9(8) 2_556 . ? Al C2 H21 117.7(8) . . ? H22 C2 H21 108.3(11) . . ? N C3 H33 110.4(8) . . ? N C3 H32 108.0(8) . . ? H33 C3 H32 109.6(11) . . ? N C3 H31 111.0(8) . . ? H33 C3 H31 108.9(11) . . ? H32 C3 H31 108.8(12) . . ? Al C4 H43 111.1(10) . . ? Al C4 H42 114.1(11) . . ? H43 C4 H42 105.5(15) . . ? Al C4 H41 111.2(11) . . ? H43 C4 H41 107.2(14) . . ? H42 C4 H41 107.4(16) . . ? Al C5 H53 114.2(11) . . ? Al C5 H52 110.4(12) . . ? H53 C5 H52 107.1(15) . . ? Al C5 H51 109.8(12) . . ? H53 C5 H51 106.1(15) . . ? H52 C5 H51 109.2(16) . . ? loop_ _geom_torsion_atom_site_label_1 _geom_torsion_atom_site_label_2 _geom_torsion_atom_site_label_3 _geom_torsion_atom_site_label_4 _geom_torsion _geom_torsion_site_symmetry_1 _geom_torsion_site_symmetry_2 _geom_torsion_site_symmetry_3 _geom_torsion_site_symmetry_4 _geom_torsion_publ_flag C5 Al N C1 147.77(6) . . . . ? C4 Al N C1 -85.50(6) . . . . ? C2 Al N C1 26.60(6) . . . . ? C5 Al N C3 -93.44(8) . . . . ? C4 Al N C3 33.28(8) . . . . ? C2 Al N C3 145.39(8) . . . . ? C5 Al N C2 34.25(7) . . . 2_556 ? C4 Al N C2 160.98(6) . . . 2_556 ? C2 Al N C2 -86.92(6) . . . 2_556 ? C3 N C1 N -176.50(8) . . . 2_556 ? C2 N C1 N 61.80(6) 2_556 . . 2_556 ? Al N C1 N -54.05(3) . . . 2_556 ? C5 Al C2 N -106.22(7) . . . 2_556 ? C4 Al C2 N 111.17(7) . . . 2_556 ? N Al C2 N 4.77(6) . . . 2_556 ? _diffrn_measured_fraction_theta_max 0.998 _diffrn_reflns_theta_full 26.99 _diffrn_measured_fraction_theta_full 0.998 _refine_diff_density_max 0.353 _refine_diff_density_min -0.151 _refine_diff_density_rms 0.037 ###NEXT data_lus9 _audit_creation_method SHELXL-97 _chemical_name_systematic ; Octamethyl-digalladiazanorbornane ; _chemical_name_common ? _chemical_melting_point ? _chemical_formula_moiety ? _chemical_formula_sum 'C9 H24 Ga2 N2' _chemical_formula_weight 299.74 loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source 'C' 'C' 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 'H' 'H' 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 'N' 'N' 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' 'Ga' 'Ga' 0.2307 1.6083 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' _symmetry_cell_setting Monoclinic _symmetry_space_group_name_H-M P2/n loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x+1/2, y, -z+1/2' '-x, -y, -z' 'x-1/2, -y, z-1/2' _cell_length_a 7.7786(3) _cell_length_b 7.4037(3) _cell_length_c 11.8506(6) _cell_angle_alpha 90.00 _cell_angle_beta 101.475(3) _cell_angle_gamma 90.00 _cell_volume 668.84(5) _cell_formula_units_Z 2 _cell_measurement_temperature 133(2) _cell_measurement_reflns_used ? _cell_measurement_theta_min ? _cell_measurement_theta_max ? _exptl_crystal_description Block _exptl_crystal_colour Colourless _exptl_crystal_size_max 0.60 _exptl_crystal_size_mid 0.40 _exptl_crystal_size_min 0.30 _exptl_crystal_density_meas ? _exptl_crystal_density_diffrn 1.488 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 308 _exptl_absorpt_coefficient_mu 3.994 _exptl_absorpt_correction_type None _exptl_absorpt_correction_T_min ? _exptl_absorpt_correction_T_max ? _exptl_absorpt_process_details ? _exptl_special_details ; ? ; _diffrn_ambient_temperature 133(2) _diffrn_radiation_wavelength 0.71073 _diffrn_radiation_type MoK\a _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_monochromator graphite _diffrn_measurement_device_type 'Nonius DIP 2020' _diffrn_measurement_method oscillation _diffrn_detector_area_resol_mean ? _diffrn_standards_number ? _diffrn_standards_interval_count ? _diffrn_standards_interval_time ? _diffrn_standards_decay_% None _diffrn_reflns_number 2447 _diffrn_reflns_av_R_equivalents 0.0359 _diffrn_reflns_av_sigmaI/netI 0.0382 _diffrn_reflns_limit_h_min 0 _diffrn_reflns_limit_h_max 9 _diffrn_reflns_limit_k_min -9 _diffrn_reflns_limit_k_max 9 _diffrn_reflns_limit_l_min -14 _diffrn_reflns_limit_l_max 14 _diffrn_reflns_theta_min 2.89 _diffrn_reflns_theta_max 26.42 _reflns_number_total 1372 _reflns_number_gt 1220 _reflns_threshold_expression >2sigma(I) _computing_data_collection 'CAD4 Software' _computing_cell_refinement 'CAD4 Software' _computing_data_reduction 'CADSHEL' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1990)' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_molecular_graphics 'SHELXTL 5.01' _computing_publication_material 'SHELXTL 5.01' _refine_special_details ; Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. ; _refine_ls_structure_factor_coef Fsqd _refine_ls_matrix_type full _refine_ls_weighting_scheme calc _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0502P)^2^+0.6180P] where P=(Fo^2^+2Fc^2^)/3' _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _atom_sites_solution_hydrogens difmap _refine_ls_hydrogen_treatment refall _refine_ls_extinction_method none _refine_ls_extinction_coef ? _refine_ls_number_reflns 1372 _refine_ls_number_parameters 108 _refine_ls_number_restraints 0 _refine_ls_R_factor_all 0.0386 _refine_ls_R_factor_gt 0.0338 _refine_ls_wR_factor_ref 0.0900 _refine_ls_wR_factor_gt 0.0863 _refine_ls_goodness_of_fit_ref 1.071 _refine_ls_restrained_S_all 1.071 _refine_ls_shift/su_max 0.000 _refine_ls_shift/su_mean 0.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_occupancy _atom_site_symmetry_multiplicity _atom_site_calc_flag _atom_site_refinement_flags _atom_site_disorder_assembly _atom_site_disorder_group Ga Ga 0.79124(4) 0.14022(4) 0.40729(3) 0.02302(16) Uani 1 1 d . . . N N 0.6215(3) 0.3083(3) 0.2894(2) 0.0208(5) Uani 1 1 d . . . C1 C 0.7500 0.4273(6) 0.2500 0.0225(9) Uani 1 2 d S . . C2 C 0.9725(4) 0.2006(5) 0.3118(3) 0.0248(6) Uani 1 1 d . . . C3 C 0.4990(5) 0.4167(5) 0.3421(3) 0.0287(7) Uani 1 1 d . . . C4 C 0.8286(5) 0.2744(6) 0.5558(3) 0.0335(8) Uani 1 1 d . . . C5 C 0.6811(6) -0.1011(5) 0.4026(4) 0.0333(8) Uani 1 1 d . . . H33 H 0.430(5) 0.498(6) 0.290(3) 0.028(9) Uiso 1 1 d . . . H11 H 0.811(5) 0.505(5) 0.311(3) 0.022(9) Uiso 1 1 d . . . H22 H 1.027(5) 0.100(6) 0.287(3) 0.029(10) Uiso 1 1 d . . . H42 H 0.921(6) 0.227(6) 0.601(4) 0.037(11) Uiso 1 1 d . . . H21 H 1.064(6) 0.274(6) 0.354(3) 0.033(10) Uiso 1 1 d . . . H32 H 0.425(6) 0.336(6) 0.368(4) 0.036(11) Uiso 1 1 d . . . H53 H 0.581(8) -0.090(7) 0.418(5) 0.058(15) Uiso 1 1 d . . . H52 H 0.677(8) -0.159(7) 0.328(5) 0.069(18) Uiso 1 1 d . . . H31 H 0.558(6) 0.482(7) 0.401(4) 0.045(13) Uiso 1 1 d . . . H51 H 0.752(8) -0.182(8) 0.456(5) 0.068(17) Uiso 1 1 d . . . H41 H 0.730(7) 0.263(8) 0.589(4) 0.052(14) Uiso 1 1 d . . . H4A H 0.842(9) 0.398(8) 0.536(5) 0.076(18) Uiso 1 1 d . . . loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_23 _atom_site_aniso_U_13 _atom_site_aniso_U_12 Ga 0.0257(2) 0.0186(2) 0.0253(2) 0.00145(13) 0.00633(15) -0.00039(13) N 0.0219(12) 0.0155(12) 0.0259(13) 0.0007(10) 0.0065(10) 0.0015(10) C1 0.024(2) 0.016(2) 0.029(2) 0.000 0.0068(18) 0.000 C2 0.0220(14) 0.0226(16) 0.0296(16) 0.0034(13) 0.0042(13) 0.0022(13) C3 0.0285(17) 0.0248(16) 0.0355(19) -0.0032(16) 0.0131(15) 0.0070(15) C4 0.0365(19) 0.034(2) 0.0285(18) -0.0035(15) 0.0036(16) 0.0002(16) C5 0.042(2) 0.0197(16) 0.041(2) 0.0048(15) 0.0152(16) -0.0031(16) _geom_special_details ; All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. ; loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance _geom_bond_site_symmetry_2 _geom_bond_publ_flag Ga C5 1.977(4) . ? Ga C4 1.991(4) . ? Ga C2 2.026(3) . ? Ga N 2.124(3) . ? N C3 1.475(4) . ? N C1 1.476(4) . ? N C2 1.503(4) 2_655 ? C1 N 1.476(4) 2_655 ? C1 H11 0.97(4) . ? C2 N 1.503(4) 2_655 ? C2 H22 0.93(4) . ? C2 H21 0.95(4) . ? C3 H33 0.95(4) . ? C3 H32 0.93(5) . ? C3 H31 0.90(5) . ? C4 H42 0.88(5) . ? C4 H41 0.93(5) . ? C4 H4A 0.95(6) . ? C5 H53 0.84(6) . ? C5 H52 0.97(6) . ? C5 H51 0.96(6) . ? loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle _geom_angle_site_symmetry_1 _geom_angle_site_symmetry_3 _geom_angle_publ_flag C5 Ga C4 117.52(17) . . ? C5 Ga C2 121.97(16) . . ? C4 Ga C2 112.85(16) . . ? C5 Ga N 107.55(15) . . ? C4 Ga N 104.56(14) . . ? C2 Ga N 85.05(11) . . ? C3 N C1 110.1(3) . . ? C3 N C2 111.9(3) . 2_655 ? C1 N C2 108.5(2) . 2_655 ? C3 N Ga 114.2(2) . . ? C1 N Ga 100.74(16) . . ? C2 N Ga 110.73(19) 2_655 . ? N C1 N 106.7(3) . 2_655 ? N C1 H11 112(2) . . ? N C1 H11 109(2) 2_655 . ? N C2 Ga 106.32(19) 2_655 . ? N C2 H22 110(2) 2_655 . ? Ga C2 H22 114(3) . . ? N C2 H21 108(2) 2_655 . ? Ga C2 H21 111(2) . . ? H22 C2 H21 106(4) . . ? N C3 H33 113(2) . . ? N C3 H32 107(3) . . ? H33 C3 H32 108(4) . . ? N C3 H31 111(3) . . ? H33 C3 H31 108(4) . . ? H32 C3 H31 110(4) . . ? Ga C4 H42 107(3) . . ? Ga C4 H41 110(3) . . ? H42 C4 H41 110(4) . . ? Ga C4 H4A 105(4) . . ? H42 C4 H4A 115(5) . . ? H41 C4 H4A 109(5) . . ? Ga C5 H53 109(4) . . ? Ga C5 H52 111(3) . . ? H53 C5 H52 112(5) . . ? Ga C5 H51 111(3) . . ? H53 C5 H51 111(5) . . ? H52 C5 H51 103(5) . . ? loop_ _geom_torsion_atom_site_label_1 _geom_torsion_atom_site_label_2 _geom_torsion_atom_site_label_3 _geom_torsion_atom_site_label_4 _geom_torsion _geom_torsion_site_symmetry_1 _geom_torsion_site_symmetry_2 _geom_torsion_site_symmetry_3 _geom_torsion_site_symmetry_4 _geom_torsion_publ_flag C5 Ga N C3 94.4(3) . . . . ? C4 Ga N C3 -31.2(3) . . . . ? C2 Ga N C3 -143.6(2) . . . . ? C5 Ga N C1 -147.6(2) . . . . ? C4 Ga N C1 86.7(2) . . . . ? C2 Ga N C1 -25.60(19) . . . . ? C5 Ga N C2 -33.0(2) . . . 2_655 ? C4 Ga N C2 -158.6(2) . . . 2_655 ? C2 Ga N C2 89.01(18) . . . 2_655 ? C3 N C1 N 173.9(3) . . . 2_655 ? C2 N C1 N -63.34(19) 2_655 . . 2_655 ? Ga N C1 N 52.96(8) . . . 2_655 ? C5 Ga C2 N 102.0(2) . . . 2_655 ? C4 Ga C2 N -109.4(2) . . . 2_655 ? N Ga C2 N -5.66(19) . . . 2_655 ? _diffrn_measured_fraction_theta_max 0.990 _diffrn_reflns_theta_full 26.42 _diffrn_measured_fraction_theta_full 0.990 _refine_diff_density_max 0.746 _refine_diff_density_min -0.616 _refine_diff_density_rms 0.102