In further pursuit of the carbene analogy: preparation and crystal structure of (N,N,N ',N '-tetramethylethylenediamine)potassium [cis-ethene-1,2-di(tert-butylamido)]gallate(I)
Schmidt, Eva Susanne; Schier, Annette; Schmidbaur, Hubert; Journal of the Chemical Society, Dalton Transactions  (2001) 505–; doi:10.1039/b101016f

data_7010609
_publ_section_title
;
 In further pursuit of the carbene analogy: preparation and crystal
 structure of
 (N,N,N&#x200A;',N&#x200A;'-tetramethylethylenediamine)potassium
 [cis-ethene-1,2-di(tert-butylamido)]gallate(I)
;
_journal_issue                   5
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              505
_journal_paper_doi               10.1039/b101016f
_journal_year                    2001
_chemical_formula_sum            'C32 H72 Ga2 K2 N8'
_chemical_formula_weight         786.62
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                101.728(1)
_cell_angle_beta                 92.051(1)
_cell_angle_gamma                114.450(1)
_cell_formula_units_Z            1
_cell_length_a                   10.3925(2)
_cell_length_b                   10.7648(2)
_cell_length_c                   10.9534(3)
_cell_measurement_temperature    143(2)
_cell_volume                     1082.28(4)
_computing_cell_refinement       SCALEPACK
_computing_data_collection       XPRESS
_computing_data_reduction        DENZO
_computing_molecular_graphics    SHELTXT-PLUS
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      143(2)
_diffrn_measured_fraction_theta_full 0.929
_diffrn_measured_fraction_theta_max 0.929
_diffrn_measurement_device_type  'Nonius DIP2020'
_diffrn_measurement_method       phi-rotation
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0281
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            4132
_diffrn_reflns_theta_full        26.43
_diffrn_reflns_theta_max         26.43
_diffrn_reflns_theta_min         2.70
_exptl_absorpt_coefficient_mu    1.466
_exptl_absorpt_correction_T_max  0.7580
_exptl_absorpt_correction_T_min  0.6279
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.207
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             420
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.298
_refine_diff_density_min         -0.449
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         4132
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0333
_refine_ls_R_factor_gt           0.0309
_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^)+(0.0284P)^2^+0.7759P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0740
_refine_ls_wR_factor_ref         0.0753
_reflns_number_gt                3906
_reflns_number_total             4132
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b101016f.txt
_cod_data_source_block           eva13
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7010609