Indirect "no-bond" (31)p···(31)p spin-spin couplings in p,p-[3]ferrocenophanes: insights from solid-state NMR spectroscopy and DFT calculations.
Wiegand, Thomas; Eckert, Hellmut; Ren, Jinjun; Brunklaus, Gunther; Fröhlich, Roland; Daniliuc, Constantin G.; Lübbe, Gerrit; Bussmann, Kathrin; Kehr, Gerald; Erker, Gerhard; Grimme, Stefan; The journal of physical chemistry. A 118 (2014) 2316–2331; doi:10.1021/jp500172b

data_1514125
_publ_section_title
;
 Indirect &quot;no-bond&quot; (31)p&#x00B7;&#x00B7;&#x00B7;(31)p spin-spin
 couplings in p,p-[3]ferrocenophanes: insights from solid-state NMR
 spectroscopy and DFT calculations.
;
_journal_issue                   12
_journal_name_full               'The journal of physical chemistry. A'
_journal_page_first              2316
_journal_page_last               2331
_journal_paper_doi               10.1021/jp500172b
_journal_volume                  118
_journal_year                    2014
_chemical_formula_sum            'C39 H48 Cl2 Fe P2'
_chemical_formula_weight         705.46
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            16
_cell_length_a                   13.4011(3)
_cell_length_b                   21.5414(3)
_cell_length_c                   48.6745(10)
_cell_measurement_reflns_used    17765
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.88
_cell_measurement_theta_min      4.08
_cell_volume                     14051.3(5)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP (BrukerAXS, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'Montel mirror'
_diffrn_radiation_source         'rotating anode Nonius FR591'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0461
_diffrn_reflns_av_sigmaI/netI    0.0449
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       57
_diffrn_reflns_limit_l_min       -57
_diffrn_reflns_number            23498
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         4.08
_exptl_absorpt_coefficient_mu    0.700
_exptl_absorpt_correction_T_max  0.9333
_exptl_absorpt_correction_T_min  0.7918
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.334
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             5952
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         2.017
_refine_diff_density_min         -0.877
_refine_diff_density_rms         0.104
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.079
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     795
_refine_ls_number_reflns         12271
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.079
_refine_ls_R_factor_all          0.0887
_refine_ls_R_factor_gt           0.0756
_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^)+(0.1054P)^2^+33.3312P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2008
_refine_ls_wR_factor_ref         0.2117
_reflns_number_gt                10054
_reflns_number_total             12271
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp500172b_si_002.cif
_cod_data_source_block           erk6450
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               1514125