Synthetic, Structural and Theoretical Studies of Amidinate and Guanidinate Stabilised Germanium(I) Dimers
Cameron Jones; Shaun P. Green; Peter Junk; Kai-Alexander Lippert; Andreas Stasch; Chemical Communications  (2006) –; doi:10.1039/b610645e

data_7101449
_publ_section_title
;
Synthetic, Structural and Theoretical Studies of
Amidinate and Guanidinate Stabilised Germanium(I) Dimers
;
_journal_issue                   38
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/b610645e
_journal_year                    2006
_chemical_formula_sum            'C62 H94 Ge2 N4 O'
_chemical_formula_weight         1056.59
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 95.77(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.051(4)
_cell_length_b                   16.770(3)
_cell_length_c                   19.911(4)
_cell_measurement_temperature    150(2)
_cell_volume                     6329(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_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  0.0488
_diffrn_reflns_av_sigmaI/netI    0.0708
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            13324
_diffrn_reflns_theta_full        27.06
_diffrn_reflns_theta_max         27.06
_diffrn_reflns_theta_min         3.34
_exptl_absorpt_coefficient_mu    0.989
_exptl_absorpt_correction_T_max  0.938
_exptl_absorpt_correction_T_min  0.726
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sortav (Blessing, 1995)'
_exptl_crystal_colour            green-red
_exptl_crystal_density_diffrn    1.109
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2264
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.588
_refine_diff_density_min         -0.421
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     321
_refine_ls_number_reflns         6871
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0791
_refine_ls_R_factor_gt           0.0504
_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^)+(0.0545P)^2^+2.5289P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1112
_refine_ls_wR_factor_ref         0.1211
_reflns_number_gt                4935
_reflns_number_total             6871
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b610645e.txt
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7101449