Structural phase transition driven by spin-lattice interaction in a quasi-one-dimensional spin system of [1-(4'-iodobenzyl)pyridinium][Ni(mnt)2].
Ren, X. M.; Akutagawa, T.; Nishihara, S.; Nakamura, T.; Fujita, W.; Awaga, K.; The journal of physical chemistry. B 109 (2005) 16610–16615; doi:10.1021/jp051995g

data_1506395
_publ_section_title
;
 Structural phase transition driven by spin-lattice interaction in a
 quasi-one-dimensional spin system of
 [1-(4'-iodobenzyl)pyridinium][Ni(mnt)2].
;
_journal_issue                   35
_journal_name_full               'The journal of physical chemistry. B'
_journal_page_first              16610
_journal_page_last               16615
_journal_paper_doi               10.1021/jp051995g
_journal_volume                  109
_journal_year                    2005
_chemical_formula_sum            'C20 H11 Cu I N5 S4'
_chemical_formula_weight         640.02
_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                 102.61(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.984(2)
_cell_length_b                   26.524(5)
_cell_length_c                   7.6252(15)
_cell_measurement_reflns_used    26793
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.7
_cell_measurement_theta_min      3.0
_cell_volume                     2365.3(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       \w
_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  0.0348
_diffrn_reflns_av_sigmaI/netI    0.0219
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            39758
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.01
_exptl_absorpt_coefficient_mu    2.600
_exptl_absorpt_correction_T_max  0.594
_exptl_absorpt_correction_T_min  0.406
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
    Higashi, T. (1995). Program for Absorption Correction.
    Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.797
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1248
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         2.191
_refine_diff_density_min         -2.123
_refine_diff_density_rms         0.104
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.132
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         5419
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.132
_refine_ls_R_factor_all          0.0623
_refine_ls_R_factor_gt           0.0482
_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^)+(0.0576P)^2^+3.8491P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1294
_refine_ls_wR_factor_ref         0.1362
_reflns_number_gt                4133
_reflns_number_total             5419
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp051995gsi20050418_062410.cif
_cod_data_source_block           Cu293K
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1506395