Sm(II) reduction chemistry of heteroalkynes: stable adducts, reductive coupling, reductive C-C/C-N bond cleavage and trapping of the tert-butyl fragment with bulky nitriles, phosphaalkynes and isonitriles.
Gardiner, Michael G.; James, Adam N.; Jones, Cameron; Schulten, Christian; Dalton transactions (Cambridge, England : 2003) 39 (2010) 6864–6870; doi:10.1039/c002778b

data_7025683
_publ_section_title
;
 Sm(II) reduction chemistry of heteroalkynes: stable adducts, reductive
 coupling, reductive C-C/C-N bond cleavage and trapping of the tert-butyl
 fragment with bulky nitriles, phosphaalkynes and isonitriles.
;
_journal_issue                   29
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6864
_journal_page_last               6870
_journal_paper_doi               10.1039/c002778b
_journal_volume                  39
_journal_year                    2010
_chemical_formula_sum            'C89 H132 N8 P2 Sm2'
_chemical_formula_weight         1676.67
_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                112.38(3)
_cell_angle_beta                 91.11(3)
_cell_angle_gamma                98.02(3)
_cell_formula_units_Z            2
_cell_length_a                   14.941(3)
_cell_length_b                   17.469(4)
_cell_length_c                   18.533(4)
_cell_measurement_temperature    150(2)
_cell_volume                     4415(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_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  0.1679
_diffrn_reflns_av_sigmaI/netI    0.2745
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            28983
_diffrn_reflns_theta_full        25.07
_diffrn_reflns_theta_max         25.07
_diffrn_reflns_theta_min         2.92
_exptl_absorpt_coefficient_mu    1.399
_exptl_absorpt_correction_T_max  0.924
_exptl_absorpt_correction_T_min  0.888
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sortav (Blessing, 1995)'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.261
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1752
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.184
_refine_diff_density_min         -0.810
_refine_diff_density_rms         0.150
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.997
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     952
_refine_ls_number_reflns         15481
_refine_ls_number_restraints     18
_refine_ls_restrained_S_all      0.999
_refine_ls_R_factor_all          0.2149
_refine_ls_R_factor_gt           0.0819
_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^)+(0.0666P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1471
_refine_ls_wR_factor_ref         0.1881
_reflns_number_gt                6948
_reflns_number_total             15481
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c002778b.txt
_cod_data_source_block           cj626
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7025683