Versatile 1,2- and 1,3-Dipole Behavior of the 1-Arsa-3-Germaallene Tip(t-Bu)Ge═C═AsMes*: Formation of a Heterocyclic Arsa(germa)carbene (AsGeHC)
Ghereg, Dumitru; Sotiropoulos, Jean-Marc; Escudié, Jean; Miqueu, Karinne; Matioszek, Dimitri; Ladeira, Sonia; Saffon-Merceron, Nathalie; Organometallics 31 (2012) 930–; doi:10.1021/om200968x

data_4067972
_publ_section_title
;
 Versatile 1,2- and 1,3-Dipole Behavior of the 1-Arsa-3-Germaallene
 Tip(t-Bu)Ge&#x2550;C&#x2550;AsMes*: Formation of a Heterocyclic
 Arsa(germa)carbene (AsGeHC)
;
_journal_issue                   3
_journal_name_full               Organometallics
_journal_page_first              930
_journal_paper_doi               10.1021/om200968x
_journal_volume                  31
_journal_year                    2012
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C52 H69 As Ge O2, C H Cl3'
_chemical_formula_sum            'C53 H70 As Cl3 Ge O2'
_chemical_formula_weight         992.97
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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
_cell_angle_alpha                90
_cell_angle_beta                 118.019(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.0231(5)
_cell_length_b                   31.4407(17)
_cell_length_c                   18.7805(9)
_cell_measurement_reflns_used    9976
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      26.96
_cell_measurement_theta_min      2.14
_cell_measurement_wavelength     0.71073
_cell_volume                     5224.7(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0368
_diffrn_reflns_av_unetI/netI     0.0339
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       37
_diffrn_reflns_limit_k_min       -33
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            39234
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         2.41
_exptl_absorpt_coefficient_mu    1.405
_exptl_absorpt_correction_T_max  0.800
_exptl_absorpt_correction_T_min  0.630
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker-AXS)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.262
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2080
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.716
_refine_diff_density_min         -0.82
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     571
_refine_ls_number_reflns         9485
_refine_ls_number_restraints     157
_refine_ls_restrained_S_all      1.02
_refine_ls_R_factor_all          0.0654
_refine_ls_R_factor_gt           0.0486
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0624P)^2^+8.9525P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1229
_refine_ls_wR_factor_ref         0.1334
_reflns_number_gt                7509
_reflns_number_total             9485
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om200968x_si_002.cif
_cod_data_source_block           5
_cod_database_code               4067972