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_1514124
_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_absolute_configuration ad
_chemical_formula_sum            'C38 H46 Fe P2'
_chemical_formula_weight         620.54
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 99.992(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.2558(2)
_cell_length_b                   9.2386(1)
_cell_length_c                   13.4456(2)
_cell_measurement_reflns_used    2868
_cell_measurement_temperature    198(2)
_cell_measurement_theta_max      27.88
_cell_measurement_theta_min      0.41
_cell_volume                     1621.64(4)
_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      198(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'graphite '
_diffrn_radiation_source         'rotating anode Nonius FR591'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.056
_diffrn_reflns_av_sigmaI/netI    0.1022
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            10901
_diffrn_reflns_theta_full        27.90
_diffrn_reflns_theta_max         27.90
_diffrn_reflns_theta_min         1.56
_exptl_absorpt_coefficient_mu    0.589
_exptl_absorpt_correction_T_max  0.9168
_exptl_absorpt_correction_T_min  0.8667
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.271
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             660
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.618
_refine_diff_density_min         -0.978
_refine_diff_density_rms         0.081
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.031(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     371
_refine_ls_number_reflns         6992
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.0811
_refine_ls_R_factor_gt           0.0583
_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^)+(0.0629P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1216
_refine_ls_wR_factor_ref         0.1324
_reflns_number_gt                5511
_reflns_number_total             6992
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp500172b_si_002.cif
_cod_data_source_block           erk4082
_cod_original_sg_symbol_H-M      P21
_cod_database_code               1514124