The first example of a Pt...Pt interaction in platinum(ii) complexes bearing bulky tri-tert-butyl-2,2':6',2''-terpyridine pendants via conformational control of the calix[4]arene moiety.
Lo, Hiu-Suet; Yip, Sung-Kong; Zhu, Nianyong; Yam, Vivian Wing-Wah; Dalton transactions (Cambridge, England : 2003)  (2007) 4386–4389; doi:10.1039/b712645j

data_7006309
_publ_section_title
;
 The first example of a Pt...Pt interaction in platinum(ii) complexes
 bearing bulky tri-tert-butyl-2,2':6',2''-terpyridine pendants via
 conformational control of the calix[4]arene moiety.
;
_journal_issue                   39
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4386
_journal_page_last               4389
_journal_paper_doi               10.1039/b712645j
_journal_year                    2007
_chemical_formula_moiety         'C127.50 H155 Cl3 F6 N6 O15 Pt2 S2'
_chemical_formula_sum            'C127.5 H155 Cl3 F6 N6 O15 Pt2 S2'
_chemical_formula_weight         2686.23
_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                 92.19(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   26.746(5)
_cell_length_b                   22.659(5)
_cell_length_c                   22.886(5)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    253(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     13860(5)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR-97
_diffrn_ambient_temperature      253(2)
_diffrn_measured_fraction_theta_full 0.729
_diffrn_measured_fraction_theta_max 0.729
_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  0.0780
_diffrn_reflns_av_sigmaI/netI    0.1507
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            57034
_diffrn_reflns_theta_full        24.42
_diffrn_reflns_theta_max         24.42
_diffrn_reflns_theta_min         1.77
_exptl_absorpt_coefficient_mu    2.170
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.287
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             5500
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.812
_refine_diff_density_min         -0.809
_refine_diff_density_rms         0.110
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.910
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1392
_refine_ls_number_reflns         16661
_refine_ls_number_restraints     66
_refine_ls_restrained_S_all      0.920
_refine_ls_R_factor_all          0.1126
_refine_ls_R_factor_gt           0.0553
_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^)+(0.0757P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1491
_refine_ls_wR_factor_ref         0.1620
_reflns_number_gt                8519
_reflns_number_total             16661
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b712645j.txt
_cod_data_source_block           mar1476a
_cod_original_formula_sum        'C127.50 H155 Cl3 F6 N6 O15 Pt2 S2'
_cod_database_code               7006309