sp Carbon Chains Surrounded by sp3 Carbon Double Helices: Directed Syntheses of Wirelike Pt(C\τbC)nPt Moieties That Are Spanned by Two P(CH2)mP Linkages via Alkene Metathesis
Laura de Quadras; Eike B. Bauer; Wolfgang Mohr; James C. Bohling; Thomas B. Peters; José Miguel Martín-Alvarez; Frank Hampel; John A. Gladysz; Journal of the American Chemical Society 129 (2007) 8296–8309; doi:10.1021/ja071612n

data_4109608
_publ_section_title
;
 sp Carbon Chains Surrounded by sp3 Carbon Double Helices: Directed
 Syntheses of Wirelike Pt(C\\tbC)nPt Moieties That Are Spanned by Two
 P(CH2)mP Linkages via Alkene Metathesis
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8296
_journal_page_last               8309
_journal_paper_doi               10.1021/ja071612n
_journal_volume                  129
_journal_year                    2007
_chemical_formula_sum            'C53 H61 F5 P2 Pt Si'
_chemical_formula_weight         1078.14
_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                84.848(1)
_cell_angle_beta                 88.311(1)
_cell_angle_gamma                85.263(1)
_cell_formula_units_Z            4
_cell_length_a                   11.5289(2)
_cell_length_b                   15.3365(2)
_cell_length_c                   28.3205(3)
_cell_measurement_reflns_used    18595
_cell_measurement_temperature    173(2)
_cell_volume                     4968.94(12)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'Nonius Collect'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    'SHELXTL NT'
_computing_publication_material  'SHELXTL NT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Nonius KappaCCd'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0304
_diffrn_reflns_av_sigmaI/netI    0.0537
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            38475
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         1.34
_exptl_absorpt_coefficient_mu    2.965
_exptl_absorpt_correction_T_max  0.4699
_exptl_absorpt_correction_T_min  0.4234
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   Scalepack
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.441
_exptl_crystal_description       plate
_exptl_crystal_F_000             2184
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.30
_refine_diff_density_max         1.814
_refine_diff_density_min         -1.232
_refine_diff_density_rms         0.151
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1106
_refine_ls_number_reflns         22462
_refine_ls_number_restraints     30
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0531
_refine_ls_R_factor_gt           0.0354
_refine_ls_shift/su_max          0.216
_refine_ls_shift/su_mean         0.031
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0602P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0886
_refine_ls_wR_factor_ref         0.1059
_reflns_number_gt                17565
_reflns_number_total             22462
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja071612nsi20070411_101851.cif
_cod_data_source_block           ldq07
_cod_database_code               4109608