Structural and magnetic investigations for the doping effect of nonmagnetic impurity on the spin-Peierls-like transition in a quasi-one-dimensional magnet: 1-(4'-nitrobenzyl)pyridinium bis(maleonitriledithiolato)nickelate.
Ren, X. M.; Akutagawa, T.; Noro, S.; Nishihara, S.; Nakamura, T.; Yoshida, Y.; Inoue, K.; The journal of physical chemistry. B 110 (2006) 7671–7677; doi:10.1021/jp0556106

data_1505715
_publ_section_title
;
 Structural and magnetic investigations for the doping effect of
 nonmagnetic impurity on the spin-Peierls-like transition in a
 quasi-one-dimensional magnet: 1-(4'-nitrobenzyl)pyridinium
 bis(maleonitriledithiolato)nickelate.
;
_journal_issue                   15
_journal_name_full               'The journal of physical chemistry. B'
_journal_page_first              7671
_journal_page_last               7677
_journal_paper_doi               10.1021/jp0556106
_journal_volume                  110
_journal_year                    2006
_chemical_formula_sum            'C20 H11 Au0.49 N6 Ni0.51 O2 S4'
_chemical_formula_weight         621.79
_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                 103.15(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.176(2)
_cell_length_b                   26.582(5)
_cell_length_c                   7.2458(14)
_cell_measurement_temperature    273(2)
_cell_volume                     2283.7(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0916
_diffrn_reflns_av_sigmaI/netI    0.0656
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            33608
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.07
_exptl_absorpt_coefficient_mu    3.977
_exptl_crystal_density_diffrn    1.809
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1224
_refine_diff_density_max         1.279
_refine_diff_density_min         -1.274
_refine_diff_density_rms         0.108
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.089
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         5232
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.089
_refine_ls_R_factor_all          0.0751
_refine_ls_R_factor_gt           0.0465
_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^)+(0.0344P)^2^+0.4383P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0930
_refine_ls_wR_factor_ref         0.1020
_reflns_number_gt                3507
_reflns_number_total             5232
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp0556106si20060207_063811.cif
_cod_data_source_block           x=0.49_at_273_K
_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_sg_symbol_H-M      P2(1)/c
_cod_database_code               1505715