Two spin-peierls-like compounds exhibiting divergent structural features, lattice compression, and expansion in the low- temperature phase.
Tian, Zhengfang; Duan, Haibao; Ren, Xiaoming; Lu, Changsheng; Li, Yizhi; Song, You; Zhu, Huizhen; Meng, Qingjin; The journal of physical chemistry. B 113 (2009) 8278–8283; doi:10.1021/jp8100333

data_1516400
_publ_section_title
;
 Two spin-peierls-like compounds exhibiting divergent structural features,
 lattice compression, and expansion in the low- temperature phase.
;
_journal_issue                   24
_journal_name_full               'The journal of physical chemistry. B'
_journal_page_first              8278
_journal_page_last               8283
_journal_paper_doi               10.1021/jp8100333
_journal_volume                  113
_journal_year                    2009
_chemical_formula_moiety         'C13 H14 N, C8 N4 Ni S4'
_chemical_formula_sum            'C21 H14 N5 Ni S4'
_chemical_formula_weight         523.32
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                88.629(6)
_cell_angle_beta                 86.360(6)
_cell_angle_gamma                76.992(4)
_cell_formula_units_Z            4
_cell_length_a                   7.239(3)
_cell_length_b                   12.109(5)
_cell_length_c                   26.347(11)
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      26.89
_cell_measurement_theta_min      2.32
_cell_volume                     2245.6(16)
_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      123(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0344
_diffrn_reflns_av_sigmaI/netI    0.0501
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            32541
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         0.77
_exptl_absorpt_coefficient_mu    1.255
_exptl_absorpt_correction_T_max  0.742
_exptl_absorpt_correction_T_min  0.692
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker(2000)'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.548
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1068
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.962
_refine_diff_density_min         -0.938
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     559
_refine_ls_number_reflns         8816
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0733
_refine_ls_R_factor_gt           0.0520
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0511P)^2^+2.2763P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1157
_refine_ls_wR_factor_ref         0.1209
_reflns_number_gt                6497
_reflns_number_total             8816
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp8100333_si_002.cif
_cod_data_source_block           261201a
_cod_database_code               1516400