Chiral Silver and Gold Rings: Synthesis and Structural, Spectroscopic, and Photophysical Properties of Ag and Au Metallamacrocycles of Bridging NHC Ligands
Carcedo, Cristina; Knight, James C.; Pope, Simon J. A.; Fallis, Ian A.; Dervisi, Athanasia; Organometallics 30 (2011) 2553–; doi:10.1021/om200125w

data_4064470
_publ_section_title
;
 Chiral Silver and Gold Rings: Synthesis and Structural, Spectroscopic,
 and Photophysical Properties of Ag and Au Metallamacrocycles of Bridging
 NHC Ligands
;
_journal_issue                   9
_journal_name_full               Organometallics
_journal_page_first              2553
_journal_paper_doi               10.1021/om200125w
_journal_volume                  30
_journal_year                    2011
_chemical_absolute_configuration rm
_chemical_formula_moiety         'C14 H18 Au2 Cl2 N4 O2'
_chemical_formula_sum            'C14 H18 Au2 Cl2 N4 O2'
_chemical_formula_weight         739.16
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 114.071(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.3312(3)
_cell_length_b                   12.6030(4)
_cell_length_c                   9.4992(4)
_cell_measurement_reflns_used    1776
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      0.998
_cell_volume                     910.67(6)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius, 2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'X-SEED (Barbour, 2001)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR92 (Giacovazzo et al, 1993)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       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  0.0475
_diffrn_reflns_av_sigmaI/netI    0.0581
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            5974
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         2.35
_exptl_absorpt_coefficient_mu    16.399
_exptl_absorpt_correction_T_max  0.7351
_exptl_absorpt_correction_T_min  0.0508
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Sortav (Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.696
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             676
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.848
_refine_diff_density_min         -1.292
_refine_diff_density_rms         0.283
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.018(16)
_refine_ls_extinction_coef       0.0016(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     220
_refine_ls_number_reflns         3742
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0444
_refine_ls_R_factor_gt           0.0371
_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^)+(0.0238P)^2^+10.6469P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0818
_refine_ls_wR_factor_ref         0.0853
_reflns_number_gt                3436
_reflns_number_total             3742
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om200125w_si_002.cif
_cod_data_source_block           ad1001a
_cod_original_cell_volume        910.66(6)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4064470