Unprecedented Large Temperature Dependence of Silver(I)‒Silver(I) Distances in Some N-Heterocyclic Carbene Silver(I) Complex Salts
Kriechbaum, Margit; Hölbling, Johanna; Stammler, Hans-Georg; List, Manuela; Berger, Raphael J. F.; Monkowius, Uwe; Organometallics 32 (2013) 2876–; doi:10.1021/om300932r

data_4080653
_publ_section_title
;
 Unprecedented Large Temperature Dependence of Silver(I)--Silver(I)
 Distances in Some N-Heterocyclic Carbene Silver(I) Complex Salts
;
_journal_issue                   10
_journal_name_full               Organometallics
_journal_page_first              2876
_journal_paper_doi               10.1021/om300932r
_journal_volume                  32
_journal_year                    2013
_chemical_formula_sum            'C12 H20 Ag2 Br2 N4'
_chemical_formula_weight         595.88
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'APEX2 v2010.1-2'
_cell_angle_alpha                90
_cell_angle_beta                 93.714(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.4961(8)
_cell_length_b                   15.8887(15)
_cell_length_c                   13.1215(12)
_cell_measurement_temperature    205.(2)
_cell_volume                     1767.6(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      205.(2)
_diffrn_detector_area_resol_mean 8.3330
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'SMART X2S'
_diffrn_measurement_method       omega-scan
_diffrn_radiation_monochromator  'doubly curved silicon crystal'
_diffrn_radiation_source         'sealed MicroFocus tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0723
_diffrn_reflns_av_sigmaI/netI    0.0484
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            16171
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.95
_exptl_absorpt_coefficient_mu    6.732
_exptl_absorpt_correction_T_max  0.24
_exptl_absorpt_correction_T_min  0.06
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.239
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1136
_exptl_crystal_size_max          1.00
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         1.181
_refine_diff_density_min         -2.330
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.072
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     185
_refine_ls_number_reflns         3115
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.072
_refine_ls_R_factor_all          0.0726
_refine_ls_R_factor_gt           0.0565
_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^)+(0.0995P)^2^+11.8022P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1639
_refine_ls_wR_factor_ref         0.1757
_reflns_number_gt                2444
_reflns_number_total             3115
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om300932r_si_002.cif
_cod_data_source_block           EtMeIm2AgAgBr2_205K
_cod_database_code               4080653