Syntheses, Structures and Solid-State Properties of MMX Mixed-Valence Chains, [NiII/III2(RCS2)4I]∞(R = Et,n-Pr andn-Bu): Evidence of a Spin-Peierls Transition
Minoru Mitsumi; Yuji Yoshida; Akihisa Kohyama; Yasutaka Kitagawa; Yoshiki Ozawa; Mototada Kobayashi; Koshiro Toriumi; Makoto Tadokoro; Naoshi Ikeda; Mitsutaka Okumura; Mohamedally Kurmoo; Inorganic Chemistry 48 (2009) 6680–6691; doi:10.1021/ic900630a

data_4302717
_publ_contact_author_address
; 
Department of Material Science
Graduate School of Material Science
University of Hyogo
3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan 
;
_publ_contact_author_email       mitsumi@sci.u-hyogo.ac.jp
_publ_contact_author_fax         +81-791-58-0154
_publ_contact_author_name        'Mitsumi, Minoru'
_publ_contact_author_phone       +81-791-58-0153
_publ_section_title
;
Syntheses, Structures and Solid-State Properties of MMX Mixed-Valence
Chains, [NiII/III2(RCS2)4I]\\infty (R = Et,n-Pr andn-Bu): Evidence of a
Spin-Peierls Transition
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              6680
_journal_page_last               6691
_journal_paper_doi               10.1021/ic900630a
_journal_volume                  48
_journal_year                    2009
_chemical_formula_moiety         'C20 H36 I Ni2 S8'
_chemical_formula_sum            'C20 H36 I Ni2 S8'
_chemical_formula_weight         777.33
_space_group_IT_number           128
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      128
_symmetry_space_group_name_Hall  '-P 4 2n'
_symmetry_space_group_name_H-M   'P 4/m n c'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            6
_cell_length_a                   13.4900(17)
_cell_length_b                   13.4900(17)
_cell_length_c                   25.000(3)
_cell_measurement_reflns_used    7561
_cell_measurement_temperature    290(1)
_cell_measurement_theta_max      27.4835
_cell_measurement_theta_min      3.1291
_cell_volume                     4549.5(10)
_computing_cell_refinement       'CrystalClear v1.3 (Rigaku Corp., 2000)'
_computing_data_collection       'CrystalClear v1.3 (Rigaku Corp., 2000)'
_computing_data_reduction        'SHELXL-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      290(1)
_diffrn_detector_area_resol_mean 14.62
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Rigaku/MSC Mercury CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating-anode X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0490
_diffrn_reflns_av_sigmaI/netI    0.0492
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2640
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.26
_exptl_absorpt_coefficient_mu    2.820
_exptl_absorpt_correction_T_max  0.7284
_exptl_absorpt_correction_T_min  0.4657
_exptl_absorpt_correction_type   numerical
_exptl_crystal_colour            Black
_exptl_crystal_density_diffrn    1.702
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             2358
_exptl_crystal_size_max          0.320
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.120
_refine_diff_density_max         1.322
_refine_diff_density_min         -0.554
_refine_diff_density_rms         0.094
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.169
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     134
_refine_ls_number_reflns         2640
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.169
_refine_ls_R_factor_all          0.0960
_refine_ls_R_factor_gt           0.0593
_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^)+(0.0494P)^2^+10.0500P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1499
_refine_ls_wR_factor_ref         0.1627
_reflns_number_gt                1766
_reflns_number_total             2640
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic900630a_si_004.cif
_cod_data_source_block           '[Pt2(n-BuCS2)4I]_290K'
_cod_original_cell_volume        4549.4(9)
_cod_database_code               4302717