Synthesis of Well-DefinedN-Heterocyclic Carbene Silver(I) Complexes
de Frémont, Pierre; Scott, Natalie M.; Stevens, Edwin D.; Ramnial, Taramatee; Lightbody, Owen C.; Macdonald, Charles L. B.; Clyburne, Jason A. C.; Abernethy, Colin D.; Nolan, Steven P.; Organometallics 24 (2005) 6301–; doi:10.1021/om050735i

data_4076185
_publ_section_title
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 Synthesis of Well-DefinedN-Heterocyclic Carbene Silver(I) Complexes
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_journal_issue                   26
_journal_name_full               Organometallics
_journal_page_first              6301
_journal_paper_doi               10.1021/om050735i
_journal_volume                  24
_journal_year                    2005
_chemical_formula_sum            'C23 H32 Ag Cl N2'
_chemical_formula_weight         479.83
_chemical_name_systematic
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 ? 
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_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.5347(15)
_cell_length_b                   26.847(4)
_cell_length_c                   6.4849(9)
_cell_measurement_reflns_used    26639
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.530
_cell_measurement_theta_min      2.276
_cell_volume                     2008.2(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0312
_diffrn_reflns_av_sigmaI/netI    0.0193
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            12591
_diffrn_reflns_theta_full        19.99
_diffrn_reflns_theta_max         19.99
_diffrn_reflns_theta_min         2.33
_exptl_absorpt_coefficient_mu    1.148
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.858815
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.587
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             992
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.244
_refine_diff_density_min         -0.264
_refine_diff_density_rms         0.064
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00
_refine_ls_extinction_coef       0.0005(3)
_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   1.177
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         1871
_refine_ls_number_restraints     280
_refine_ls_restrained_S_all      1.097
_refine_ls_R_factor_all          0.0261
_refine_ls_R_factor_gt           0.0260
_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^)+(0.0354P)^2^+3.0322P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0657
_refine_ls_wR_factor_ref         0.0657
_reflns_number_gt                1864
_reflns_number_total             1871
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om050735isi20050825_013934.cif
_cod_data_source_block           nol245
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               4076185