Silver(I) N-Heterocyclic Carbenes with Long N-Alkyl Chains
Lee, C. K.; Vasam, Chandra Sekhar; Huang, T. W.; Wang, H. M. J.; Yang, R. Y.; Lee, C. S.; Lin, Ivan J. B.; Organometallics 25 (2006) 3768–; doi:10.1021/om060198h

data_4075311
_publ_section_title
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 Silver(I) N-Heterocyclic Carbenes with Long N-Alkyl Chains
;
_journal_issue                   15
_journal_name_full               Organometallics
_journal_page_first              3768
_journal_paper_doi               10.1021/om060198h
_journal_volume                  25
_journal_year                    2006
_chemical_formula_sum            'C54 H92 Ag2 Br2 N4'
_chemical_formula_weight         1172.88
_chemical_name_systematic
;

 ?

;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 98.827(12)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.390(2)
_cell_length_b                   17.0750(17)
_cell_length_c                   18.536(4)
_cell_measurement_reflns_used    22
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      12.50
_cell_measurement_theta_min      10.52
_cell_volume                     5751.5(15)
_computing_cell_refinement       'Siemens XSCANS'
_computing_data_collection       'Siemens XSCANS'
_computing_data_reduction        'Siemens SHELXTL'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Siemens P4'
_diffrn_measurement_method       '\w 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  0.0536
_diffrn_reflns_av_sigmaI/netI    0.1394
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            11838
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.63
_diffrn_standards_decay_%        8.60
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    2.106
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.5440
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.355
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       clumn
_exptl_crystal_F_000             2432
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.657
_refine_diff_density_min         -0.471
_refine_diff_density_rms         0.088
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     539
_refine_ls_number_reflns         9969
_refine_ls_number_restraints     32
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.2121
_refine_ls_R_factor_gt           0.0750
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0600P)^2^+8.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1496
_refine_ls_wR_factor_ref         0.1961
_reflns_number_gt                3973
_reflns_number_total             9969
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om060198hsi20060506_044031.cif
_cod_data_source_block           C10-bimyAgBr
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 
;
_cod_original_cell_volume        5751.5(16)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4075311