Diphosphine and Diarsine Complexes of Germanium(II) Halides-Preparation, Spectroscopic, and Structural Studies
Fei Cheng; Andrew L. Hector; William Levason; Gillian Reid; Michael Webster; Wenjian Zhang; Inorganic Chemistry 49 (2010) 752–760; doi:10.1021/ic902068z

data_4314598
_publ_contact_author_address
;   School of Chemistry
    University of Southampton
    Southampton SO17 1BJ, UK
;
_publ_contact_author_email       gr@soton.ac.uk
_publ_contact_author_fax         '023 8059 3781'
_publ_contact_author_name        'Professor Gillian Reid'
_publ_contact_author_phone       '023 8059 3609'
_publ_section_title
;
 Diphosphine and Diarsine Complexes of Germanium(II) Halides-Preparation,
 Spectroscopic, and Structural Studies
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              752
_journal_page_last               760
_journal_paper_doi               10.1021/ic902068z
_journal_volume                  49
_journal_year                    2010
_chemical_formula_moiety         'C10 H16 Br2 Ge P2'
_chemical_formula_sum            'C10 H16 Br2 Ge P2'
_chemical_formula_weight         430.58
_chemical_name_systematic
; 
 Dibromo(1,2-bis(dimethylphosphino)benzene-P,P')germanium(II) 
;
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_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_author_name               'Webster, M.'
_audit_creation_date             2008-12-10
_audit_creation_method           'SHELXL-97 + hand edit'
_cell_angle_alpha                90.00
_cell_angle_beta                 110.646(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   29.441(4)
_cell_length_b                   7.5466(10)
_cell_length_c                   14.395(2)
_cell_measurement_reflns_used    3607
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     2992.9(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0496
_diffrn_reflns_av_sigmaI/netI    0.0367
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       -38
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            18434
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.96
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    7.571
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7712
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'G.M. Sheldrick, (2007). SADABS. Version 2007/2. Bruker AXS Inc.'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.911
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1664
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.556
_refine_diff_density_min         -0.553
_refine_diff_density_rms         0.130
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.118
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     140
_refine_ls_number_reflns         3413
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.118
_refine_ls_R_factor_all          0.0406
_refine_ls_R_factor_gt           0.0318
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+18.8638P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0624
_refine_ls_wR_factor_ref         0.0664
_reflns_number_gt                3028
_reflns_number_total             3413
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            ic902068z_si_001_05.cif
_cod_data_source_block           08wz1202
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4314598