#------------------------------------------------------------------------------ #$Date: 2014-07-12 00:06:05 +0300 (Sat, 12 Jul 2014) $ #$Revision: 120077 $ #$URL: file:///home/coder/svn-repositories/cod/cif/4/11/28/4112814.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/ # # All data on this site have been placed in the public domain by the # contributors. # data_4112814 loop_ _publ_author_name 'Lourdes Pia H. Lopez' 'Richard R. Schrock' _publ_section_title ; Formation of Dimers That Contain Unbridged W(IV)/W(IV) Double Bonds ; _journal_name_full 'Journal of the American Chemical Society' _journal_page_first 9526 _journal_page_last 9527 _journal_volume 126 _journal_year 2004 _chemical_formula_sum 'C46 H56 F10 N2 O2 W2' _chemical_formula_weight 1226.63 _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 94.8380(10) _cell_angle_gamma 90.00 _cell_formula_units_Z 2 _cell_length_a 10.5289(6) _cell_length_b 9.9479(6) _cell_length_c 22.5331(14) _cell_measurement_temperature 193(2) _cell_volume 2351.7(2) _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1990)' _diffrn_ambient_temperature 193(2) _diffrn_measured_fraction_theta_full 0.998 _diffrn_measured_fraction_theta_max 0.998 _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 0.0782 _diffrn_reflns_av_sigmaI/netI 0.0546 _diffrn_reflns_limit_h_max 13 _diffrn_reflns_limit_h_min -12 _diffrn_reflns_limit_k_max 12 _diffrn_reflns_limit_k_min -12 _diffrn_reflns_limit_l_max 22 _diffrn_reflns_limit_l_min -28 _diffrn_reflns_number 14501 _diffrn_reflns_theta_full 27.00 _diffrn_reflns_theta_max 27.00 _diffrn_reflns_theta_min 1.81 _exptl_absorpt_coefficient_mu 4.965 _exptl_absorpt_correction_type none _exptl_crystal_colour red _exptl_crystal_density_diffrn 1.732 _exptl_crystal_description blocks _exptl_crystal_F_000 1200 _exptl_crystal_size_max 0.45 _exptl_crystal_size_mid 0.40 _exptl_crystal_size_min 0.30 _refine_diff_density_max 1.971 _refine_diff_density_min -1.294 _refine_diff_density_rms 0.133 _refine_ls_extinction_coef 0.00140(15) _refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^ _refine_ls_extinction_method SHELXL _refine_ls_goodness_of_fit_ref 1.039 _refine_ls_hydrogen_treatment mixed _refine_ls_matrix_type full _refine_ls_number_parameters 315 _refine_ls_number_reflns 5143 _refine_ls_number_restraints 0 _refine_ls_restrained_S_all 1.039 _refine_ls_R_factor_all 0.0335 _refine_ls_R_factor_gt 0.0295 _refine_ls_shift/su_max 0.004 _refine_ls_shift/su_mean 0.000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0411P)^2^+1.1317P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_gt 0.0762 _refine_ls_wR_factor_ref 0.0779 _reflns_number_gt 4623 _reflns_number_total 5143 _reflns_threshold_expression >2sigma(I) _[local]_cod_data_source_file ja0400988_s2.cif _[local]_cod_data_source_block 03265 _cod_database_code 4112814 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, y+1/2, -z+1/2' '-x, -y, -z' 'x, -y-1/2, z-1/2' loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_occupancy _atom_site_symmetry_multiplicity _atom_site_calc_flag _atom_site_refinement_flags _atom_site_disorder_assembly _atom_site_disorder_group W1 W 0.091195(12) 0.923573(12) 0.502571(5) 0.02325(7) Uani 1 1 d . . . N1 N 0.1797(3) 1.0418(3) 0.46606(14) 0.0298(6) Uani 1 1 d . . . F1 F 0.2562(3) 0.6003(2) 0.59513(12) 0.0495(7) Uani 1 1 d . . . O1 O 0.1208(3) 0.8348(3) 0.57879(11) 0.0354(6) Uani 1 1 d . . . F2 F 0.4174(3) 0.5623(3) 0.69258(14) 0.0609(8) Uani 1 1 d . . . F3 F 0.4498(3) 0.7560(4) 0.77725(12) 0.0700(9) Uani 1 1 d . . . F5 F 0.1508(3) 1.0276(3) 0.66670(12) 0.0556(7) Uani 1 1 d . . . C18 C 0.2164(4) 0.9117(4) 0.67228(19) 0.0370(9) Uani 1 1 d . . . C16 C 0.3680(4) 0.7757(5) 0.72892(18) 0.0462(11) Uani 1 1 d . . . C2 C 0.2641(4) 1.1861(4) 0.39232(17) 0.0344(8) Uani 1 1 d . . . F4 F 0.3141(3) 0.9884(3) 0.76379(12) 0.0653(8) Uani 1 1 d . . . C5 C 0.4252(4) 1.3042(4) 0.4833(2) 0.0385(9) Uani 1 1 d . . . H5 H 0.4802 1.3450 0.5137 0.046 Uiso 1 1 calc R . . C3 C 0.3493(4) 1.2882(4) 0.3804(2) 0.0429(9) Uani 1 1 d . . . H3 H 0.3529 1.3186 0.3406 0.052 Uiso 1 1 calc R . . C6 C 0.3419(3) 1.2025(4) 0.49815(17) 0.0320(8) Uani 1 1 d . . . C17 C 0.2991(4) 0.8926(5) 0.72220(18) 0.0432(10) Uani 1 1 d . . . C13 C 0.2005(3) 0.8157(4) 0.62734(16) 0.0313(8) Uani 1 1 d . . . C14 C 0.2685(4) 0.6975(4) 0.63626(17) 0.0354(8) Uani 1 1 d . . . C10 C 0.3399(4) 1.1554(4) 0.56246(17) 0.0353(8) Uani 1 1 d . . . H10 H 0.2554 1.1119 0.5663 0.042 Uiso 1 1 calc R . . C1 C 0.2618(3) 1.1444(3) 0.45162(16) 0.0271(7) Uani 1 1 d . . . C20 C 0.1090(4) 0.6784(4) 0.41304(19) 0.0413(9) Uani 1 1 d . . . C4 C 0.4287(4) 1.3462(4) 0.4254(2) 0.0434(10) Uani 1 1 d . . . H4 H 0.4859 1.4154 0.4161 0.052 Uiso 1 1 calc R . . C7 C 0.1775(4) 1.1251(5) 0.34207(18) 0.0415(9) Uani 1 1 d . . . H7 H 0.1231 1.0551 0.3593 0.050 Uiso 1 1 calc R . . C15 C 0.3508(4) 0.6779(5) 0.68638(19) 0.0432(10) Uani 1 1 d . . . C19 C 0.0191(4) 0.7837(4) 0.43597(17) 0.0329(8) Uani 1 1 d . A . H19A H -0.0527 0.7350 0.4519 0.039 Uiso 1 1 calc R . . H19B H -0.0169 0.8362 0.4012 0.039 Uiso 1 1 calc R . . C12 C 0.3534(6) 1.2684(5) 0.6073(2) 0.0581(13) Uani 1 1 d . . . H12A H 0.4392 1.3069 0.6078 0.087 Uiso 1 1 calc R . . H12B H 0.3398 1.2334 0.6469 0.087 Uiso 1 1 calc R . . H12C H 0.2900 1.3381 0.5962 0.087 Uiso 1 1 calc R . . C9 C 0.0913(5) 1.2289(5) 0.3104(2) 0.0522(11) Uani 1 1 d . . . H9A H 0.0389 1.2714 0.3391 0.078 Uiso 1 1 calc R . . H9B H 0.0359 1.1850 0.2791 0.078 Uiso 1 1 calc R . . H9C H 0.1433 1.2973 0.2927 0.078 Uiso 1 1 calc R . . C11 C 0.4433(5) 1.0469(5) 0.5755(2) 0.0546(12) Uani 1 1 d . . . H11A H 0.4271 0.9714 0.5480 0.082 Uiso 1 1 calc R . . H11B H 0.4410 1.0151 0.6166 0.082 Uiso 1 1 calc R . . H11C H 0.5273 1.0853 0.5703 0.082 Uiso 1 1 calc R . . C8 C 0.2579(7) 1.0566(6) 0.2960(3) 0.0735(18) Uani 1 1 d . . . H8A H 0.3106 1.1243 0.2781 0.110 Uiso 1 1 calc R . . H8B H 0.2009 1.0144 0.2648 0.110 Uiso 1 1 calc R . . H8C H 0.3129 0.9880 0.3160 0.110 Uiso 1 1 calc R . . C21 C 0.074(2) 0.6256(19) 0.3534(7) 0.072(5) Uani 0.377(10) 1 d P A 1 H21A H 0.0986 0.6902 0.3236 0.108 Uiso 0.377(10) 1 calc PR A 1 H21B H -0.0183 0.6109 0.3483 0.108 Uiso 0.377(10) 1 calc PR A 1 H21C H 0.1183 0.5402 0.3484 0.108 Uiso 0.377(10) 1 calc PR A 1 C22 C 0.0890(16) 0.5509(14) 0.4592(6) 0.057(4) Uani 0.377(10) 1 d P A 1 H22A H 0.0055 0.5095 0.4491 0.086 Uiso 0.377(10) 1 calc PR A 1 H22B H 0.0936 0.5842 0.5003 0.086 Uiso 0.377(10) 1 calc PR A 1 H22C H 0.1560 0.4839 0.4554 0.086 Uiso 0.377(10) 1 calc PR A 1 C23 C 0.2467(14) 0.7085(16) 0.4236(9) 0.070(5) Uani 0.377(10) 1 d P A 1 H23A H 0.2936 0.6252 0.4333 0.105 Uiso 0.377(10) 1 calc PR A 1 H23B H 0.2605 0.7718 0.4568 0.105 Uiso 0.377(10) 1 calc PR A 1 H23C H 0.2771 0.7484 0.3876 0.105 Uiso 0.377(10) 1 calc PR A 1 C21A C 0.0344(11) 0.5732(9) 0.3774(3) 0.070(3) Uani 0.623(10) 1 d P A 2 H21D H -0.0314 0.6166 0.3506 0.106 Uiso 0.623(10) 1 calc PR A 2 H21E H -0.0060 0.5124 0.4044 0.106 Uiso 0.623(10) 1 calc PR A 2 H21F H 0.0919 0.5219 0.3539 0.106 Uiso 0.623(10) 1 calc PR A 2 C22A C 0.1850(9) 0.7578(8) 0.3657(3) 0.067(3) Uani 0.623(10) 1 d PR A 2 H22D H 0.2386 0.6946 0.3455 0.101 Uiso 0.623(10) 1 d PR A 2 H22E H 0.2389 0.8266 0.3862 0.101 Uiso 0.623(10) 1 d PR A 2 H22F H 0.1243 0.8007 0.3362 0.101 Uiso 0.623(10) 1 d PR A 2 C23A C 0.2054(10) 0.6274(11) 0.4592(5) 0.069(3) Uani 0.623(10) 1 d P A 2 H23D H 0.1636 0.6031 0.4950 0.103 Uiso 0.623(10) 1 calc PR A 2 H23E H 0.2692 0.6973 0.4692 0.103 Uiso 0.623(10) 1 calc PR A 2 H23F H 0.2472 0.5479 0.4441 0.103 Uiso 0.623(10) 1 calc PR A 2 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_23 _atom_site_aniso_U_13 _atom_site_aniso_U_12 W1 0.02609(10) 0.02140(10) 0.02151(10) -0.00248(5) -0.00236(6) 0.00300(5) N1 0.0324(16) 0.0240(14) 0.0320(16) -0.0052(13) -0.0024(13) 0.0035(13) F1 0.0599(17) 0.0364(12) 0.0505(15) -0.0012(11) -0.0048(13) 0.0084(12) O1 0.0394(14) 0.0388(15) 0.0262(12) 0.0042(11) -0.0078(11) 0.0049(12) F2 0.0573(18) 0.0659(18) 0.0583(18) 0.0249(14) -0.0026(14) 0.0250(14) F3 0.0551(17) 0.110(3) 0.0403(14) 0.0140(16) -0.0228(13) 0.0043(17) F5 0.0748(19) 0.0427(14) 0.0477(15) -0.0045(12) -0.0028(13) 0.0156(14) C18 0.040(2) 0.038(2) 0.032(2) 0.0031(15) 0.0006(17) -0.0004(16) C16 0.0325(19) 0.073(3) 0.0311(19) 0.012(2) -0.0074(16) -0.004(2) C2 0.037(2) 0.0294(18) 0.037(2) -0.0004(16) 0.0041(16) 0.0020(15) F4 0.079(2) 0.075(2) 0.0399(15) -0.0141(14) -0.0104(14) -0.0109(17) C5 0.0323(19) 0.031(2) 0.051(2) -0.0040(18) -0.0006(17) -0.0025(16) C3 0.042(2) 0.039(2) 0.048(2) 0.0080(19) 0.0085(18) 0.0013(18) C6 0.0246(17) 0.0286(18) 0.042(2) -0.0020(15) -0.0014(14) 0.0025(14) C17 0.048(2) 0.054(2) 0.0272(19) 0.0003(19) 0.0002(17) -0.012(2) C13 0.0280(17) 0.0372(19) 0.0278(17) 0.0078(15) -0.0024(14) -0.0017(15) C14 0.036(2) 0.038(2) 0.0314(18) 0.0083(16) -0.0017(15) -0.0007(16) C10 0.0287(18) 0.038(2) 0.039(2) -0.0081(17) -0.0016(15) 0.0010(16) C1 0.0293(17) 0.0204(16) 0.0320(18) -0.0011(14) 0.0052(14) 0.0030(13) C20 0.043(2) 0.037(2) 0.044(2) -0.0161(18) -0.0006(18) 0.0090(18) C4 0.038(2) 0.033(2) 0.059(3) 0.0021(19) 0.0090(19) -0.0042(17) C7 0.052(2) 0.041(2) 0.0314(19) 0.0003(18) 0.0019(17) -0.003(2) C15 0.033(2) 0.055(3) 0.041(2) 0.018(2) -0.0015(17) 0.0099(19) C19 0.0329(18) 0.0302(18) 0.0347(19) -0.0107(15) -0.0022(15) 0.0052(15) C12 0.079(4) 0.052(3) 0.041(2) -0.015(2) -0.012(2) -0.004(3) C9 0.050(3) 0.057(3) 0.048(2) 0.008(2) -0.003(2) -0.006(2) C11 0.042(2) 0.061(3) 0.061(3) 0.023(2) 0.008(2) 0.015(2) C8 0.077(4) 0.092(4) 0.052(3) -0.031(3) 0.004(3) 0.009(3) C21 0.104(16) 0.062(11) 0.049(9) -0.023(8) -0.004(9) 0.012(10) C22 0.078(10) 0.053(7) 0.040(7) 0.011(6) 0.003(6) 0.019(7) C23 0.051(8) 0.049(9) 0.110(15) -0.027(9) 0.006(8) 0.009(7) C21A 0.084(8) 0.047(6) 0.083(8) -0.038(5) 0.025(6) -0.008(5) C22A 0.078(6) 0.061(5) 0.068(6) -0.022(5) 0.040(5) -0.001(5) C23A 0.067(6) 0.063(6) 0.075(6) -0.012(5) 0.000(5) 0.040(5) loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' F F 0.0171 0.0103 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' W W -0.8490 6.8722 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle _geom_angle_site_symmetry_3 N1 W1 O1 132.30(13) . N1 W1 C19 106.23(15) . O1 W1 C19 110.31(14) . N1 W1 W1 90.38(10) 3_576 O1 W1 W1 113.17(9) 3_576 C19 W1 W1 98.08(10) 3_576 C1 N1 W1 165.5(3) . C13 O1 W1 146.7(3) . F5 C18 C17 118.6(4) . F5 C18 C13 119.4(4) . C17 C18 C13 121.9(4) . F3 C16 C15 120.1(4) . F3 C16 C17 120.6(4) . C15 C16 C17 119.2(4) . C3 C2 C1 117.5(4) . C3 C2 C7 120.2(4) . C1 C2 C7 122.4(4) . C4 C5 C6 121.0(4) . C4 C3 C2 121.4(4) . C5 C6 C1 117.8(4) . C5 C6 C10 120.6(3) . C1 C6 C10 121.7(3) . F4 C17 C16 119.8(4) . F4 C17 C18 120.3(4) . C16 C17 C18 119.9(4) . O1 C13 C14 121.5(3) . O1 C13 C18 121.8(3) . C14 C13 C18 116.7(3) . F1 C14 C15 118.9(4) . F1 C14 C13 119.7(3) . C15 C14 C13 121.4(4) . C12 C10 C6 113.6(4) . C12 C10 C11 111.6(4) . C6 C10 C11 109.3(3) . N1 C1 C2 120.0(3) . N1 C1 C6 118.0(3) . C2 C1 C6 122.0(3) . C21 C20 C23 112.9(12) . C21 C20 C23A 128.9(9) . C23 C20 C23A 49.6(8) . C21 C20 C21A 34.5(8) . C23 C20 C21A 133.5(8) . C23A C20 C21A 115.7(7) . C21 C20 C19 116.2(9) . C23 C20 C19 115.7(6) . C23A C20 C19 113.8(4) . C21A C20 C19 110.3(5) . C21 C20 C22A 70.4(9) . C23 C20 C22A 57.8(9) . C23A C20 C22A 106.7(7) . C21A C20 C22A 104.8(5) . C19 C20 C22A 104.3(4) . C21 C20 C22 105.4(10) . C23 C20 C22 103.2(10) . C23A C20 C22 54.2(8) . C21A C20 C22 73.4(6) . C19 C20 C22 101.3(6) . C22A C20 C22 153.1(7) . C5 C4 C3 120.4(4) . C9 C7 C2 112.2(4) . C9 C7 C8 108.9(4) . C2 C7 C8 110.3(4) . F2 C15 C16 119.8(4) . F2 C15 C14 119.4(4) . C16 C15 C14 120.7(4) . C20 C19 W1 119.3(3) . loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance _geom_bond_site_symmetry_2 W1 N1 1.749(3) . W1 O1 1.933(2) . W1 C19 2.139(3) . W1 W1 2.4445(3) 3_576 N1 C1 1.394(5) . F1 C14 1.338(5) . O1 C13 1.335(4) . F2 C15 1.348(5) . F3 C16 1.344(5) . F5 C18 1.344(5) . C18 C17 1.377(6) . C18 C13 1.392(6) . C16 C15 1.368(7) . C16 C17 1.372(7) . C2 C3 1.397(6) . C2 C1 1.401(5) . C2 C7 1.519(5) . F4 C17 1.336(5) . C5 C4 1.375(7) . C5 C6 1.398(6) . C3 C4 1.383(6) . C6 C1 1.412(5) . C6 C10 1.524(6) . C13 C14 1.382(5) . C14 C15 1.378(5) . C10 C12 1.509(5) . C10 C11 1.543(6) . C20 C21 1.461(15) . C20 C23 1.479(16) . C20 C23A 1.481(9) . C20 C21A 1.501(8) . C20 C19 1.531(5) . C20 C22A 1.596(9) . C20 C22 1.665(14) . C7 C9 1.513(6) . C7 C8 1.551(7) . loop_ _geom_torsion_atom_site_label_1 _geom_torsion_atom_site_label_2 _geom_torsion_atom_site_label_3 _geom_torsion_atom_site_label_4 _geom_torsion _geom_torsion_site_symmetry_1 O1 W1 N1 C1 -26.2(11) . C19 W1 N1 C1 -165.1(11) . W1 W1 N1 C1 96.3(11) 3_576 N1 W1 O1 C13 -4.3(5) . C19 W1 O1 C13 133.4(5) . W1 W1 O1 C13 -117.9(5) 3_576 C1 C2 C3 C4 0.1(6) . C7 C2 C3 C4 179.6(4) . C4 C5 C6 C1 0.0(6) . C4 C5 C6 C10 179.2(4) . F3 C16 C17 F4 0.6(7) . C15 C16 C17 F4 179.2(4) . F3 C16 C17 C18 179.6(4) . C15 C16 C17 C18 -1.7(7) . F5 C18 C17 F4 -0.5(7) . C13 C18 C17 F4 178.4(4) . F5 C18 C17 C16 -179.5(4) . C13 C18 C17 C16 -0.6(7) . W1 O1 C13 C14 -105.3(5) . W1 O1 C13 C18 76.7(6) . F5 C18 C13 O1 -0.7(6) . C17 C18 C13 O1 -179.6(4) . F5 C18 C13 C14 -178.7(4) . C17 C18 C13 C14 2.4(6) . O1 C13 C14 F1 1.0(6) . C18 C13 C14 F1 179.1(4) . O1 C13 C14 C15 -180.0(4) . C18 C13 C14 C15 -1.9(6) . C5 C6 C10 C12 39.7(5) . C1 C6 C10 C12 -141.2(4) . C5 C6 C10 C11 -85.6(5) . C1 C6 C10 C11 93.5(4) . W1 N1 C1 C2 -174.7(9) . W1 N1 C1 C6 5.9(13) . C3 C2 C1 N1 -179.3(3) . C7 C2 C1 N1 1.2(6) . C3 C2 C1 C6 0.1(6) . C7 C2 C1 C6 -179.4(4) . C5 C6 C1 N1 179.3(3) . C10 C6 C1 N1 0.1(5) . C5 C6 C1 C2 -0.1(5) . C10 C6 C1 C2 -179.3(3) . C6 C5 C4 C3 0.1(7) . C2 C3 C4 C5 -0.1(7) . C3 C2 C7 C9 -59.4(5) . C1 C2 C7 C9 120.0(4) . C3 C2 C7 C8 62.1(6) . C1 C2 C7 C8 -118.4(5) . F3 C16 C15 F2 -1.0(7) . C17 C16 C15 F2 -179.7(4) . F3 C16 C15 C14 -179.2(4) . C17 C16 C15 C14 2.2(7) . F1 C14 C15 F2 0.6(6) . C13 C14 C15 F2 -178.4(4) . F1 C14 C15 C16 178.7(4) . C13 C14 C15 C16 -0.3(7) . C21 C20 C19 W1 -155.3(10) . C23 C20 C19 W1 -19.5(11) . C23A C20 C19 W1 35.5(7) . C21A C20 C19 W1 167.6(4) . C22A C20 C19 W1 -80.4(4) . C22 C20 C19 W1 91.2(6) . N1 W1 C19 C20 75.9(3) . O1 W1 C19 C20 -72.9(4) . W1 W1 C19 C20 168.6(3) 3_576 _journal_paper_doi 10.1021/ja0400988