The synthesis and structural characterisation of helical silver(i) complexes with short bis(pyridylimine) ligands
Dong, Guo; Cheng, He; Chun-Ying, Duan; Chun-Qi, Qian; Qing-Jin, Meng; New Journal of Chemistry 26 (2002) 796–; doi:10.1039/b111661b

data_7050824
_publ_section_title
;
 The synthesis and structural characterisation of helical silver(i)
 complexes with short bis(pyridylimine) ligands
;
_journal_issue                   6
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              796
_journal_paper_doi               10.1039/b111661b
_journal_volume                  26
_journal_year                    2002
_chemical_formula_sum            'C14 H14 N4'
_chemical_formula_weight         238.29
_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                 96.154(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            12
_cell_length_a                   8.5633(9)
_cell_length_b                   18.779(2)
_cell_length_c                   24.041(3)
_cell_measurement_reflns_used    5116
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      23.708
_cell_measurement_theta_min      2.325
_cell_volume                     3843.8(7)
_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  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      293(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  0.0843
_diffrn_reflns_av_sigmaI/netI    0.0663
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            19507
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         1.70
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            pale-yellow
_exptl_crystal_density_diffrn    1.235
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1512
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.197
_refine_diff_density_min         -0.238
_refine_diff_density_rms         0.043
_refine_ls_extinction_coef       0.0103(8)
_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   1.016
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     494
_refine_ls_number_reflns         6748
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0937
_refine_ls_R_factor_gt           0.0628
_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^)+(0.0750P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1573
_refine_ls_wR_factor_ref         0.1675
_reflns_number_gt                4016
_reflns_number_total             6748
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b111661b.txt
_cod_data_source_block           ligand_L
_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_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_cell_volume        3843.9(7)
_cod_original_sg_symbol_H-M      'P21/c  '
_cod_database_code               7050824