Benzannulated N-heterocyclic germylenes and stannylenes with sterically demanding N,N'-substituents.
Krupski, Sergei; Pöttgen, Rainer; Schellenberg, Inga; Hahn, F. Ekkehardt; Dalton transactions (Cambridge, England : 2003) 43 (2014) 173–181; doi:10.1039/c3dt51961a

data_7029262
_publ_section_title
;
 Benzannulated N-heterocyclic germylenes and stannylenes with sterically
 demanding N,N'-substituents.
;
_journal_issue                   1
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              173
_journal_page_last               181
_journal_paper_doi               10.1039/c3dt51961a
_journal_volume                  43
_journal_year                    2014
_chemical_formula_sum            'C30 H38 Ge N2'
_chemical_formula_weight         499.21
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.713(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.0671(15)
_cell_length_b                   10.9479(18)
_cell_length_c                   27.971(5)
_cell_measurement_reflns_used    900
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      22.5
_cell_measurement_theta_min      1
_cell_volume                     2775.3(8)
_computing_cell_refinement       'APEX2(Bruker AXS, 2007)'
_computing_data_collection       'APEX2(Bruker AXS, 2007)'
_computing_data_reduction        'SAINT,SADABS (Bruker AXS, 2007 )'
_computing_molecular_graphics
;
ORTEP3,L.J. Farrugia, J. Appl. Cryst. (1997) 30, 565
;
_computing_structure_refinement
;
SHELXL-97, G. M. Sheldrick, Acta Cryst. (2008) A64, 112-122
;
_computing_structure_solution
;
SHELXS-97 , G. M. Sheldrick, Acta Cryst. (2008) A64, 112-122
;
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 80
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'Omega and Phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0443
_diffrn_reflns_av_sigmaI/netI    0.0532
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       39
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            25109
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         1.46
_exptl_absorpt_coefficient_mu    1.122
_exptl_absorpt_correction_T_max  0.9671
_exptl_absorpt_correction_T_min  0.8678
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Corrections were done with the SADABS program, utilizing the none merged
raw data obtained from the integration process. Integration and final cell
refinement were done with SAINT.

SADABS reports ratio of Tmin/Tmax = 0.827479

;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.195
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'transparent stick'
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.513
_refine_diff_density_min         -0.514
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     306
_refine_ls_number_reflns         8008
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0749
_refine_ls_R_factor_gt           0.0426
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0546P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0953
_refine_ls_wR_factor_ref         0.1077
_reflns_number_gt                5528
_reflns_number_total             8008
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt51961a.txt
_cod_data_source_block           sad3
_cod_original_cell_volume        2775.4(8)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7029262