#------------------------------------------------------------------------------ #$Date: 2016-02-19 14:29:56 +0000 (Fri, 19 Feb 2016) $ #$Revision: 176759 $ #$URL: svn://www.crystallography.net/cod/cif/2/00/62/2006247.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/. The original data for this entry # were provided by IUCr Journals, http://journals.iucr.org/. # # The file may be used within the scientific community so long as # proper attribution is given to the journal article from which the # data were obtained. # data_2006247 loop_ _publ_author_name 'Stark, Joseph L.' 'Whitmire, Kenton H.' _publ_section_title ; trans-Dibromobis(triphenylphosphine)palladium(II) Tetrahydrofuran Solvate and trans-Dichlorobis(triphenylphosphine)palladium(II) Bis(chloroform) Solvate ; _journal_issue 6 _journal_name_full 'Acta Crystallographica Section C' _journal_page_first IUC9700007 _journal_paper_doi 10.1107/S0108270197099502 _journal_volume 53 _journal_year 1997 _chemical_formula_moiety 'C36 H30 Br2 P2 Pd,C4 H8 O' _chemical_formula_structural ; [(C6H5)3P]2PdBr2 . C4H8O ; _chemical_formula_sum 'C40 H38 Br2 O P2 Pd' _chemical_formula_weight 862.86 _chemical_name_common ; bis(triphenylphosphine)palladium bromide ; _chemical_name_systematic ; trans-dibromobis(triphenylphosphine)palladium(II) ; _space_group_IT_number 2 _symmetry_cell_setting triclinic _symmetry_space_group_name_Hall '-P 1' _symmetry_space_group_name_H-M 'P -1' _audit_creation_method SHELXL _cell_angle_alpha 92.16(3) _cell_angle_beta 92.81(3) _cell_angle_gamma 98.73(3) _cell_formula_units_Z 2 _cell_length_a 9.356(2) _cell_length_b 9.609(2) _cell_length_c 20.529(4) _cell_measurement_reflns_used 25 _cell_measurement_temperature 223(2) _cell_measurement_theta_max 6.08 _cell_measurement_theta_min 3.74 _cell_volume 1820.1(7) _computing_cell_refinement 'TEXSAN 5.0' _computing_data_collection 'TEXSAN 5.0' _computing_data_reduction 'TEXSAN 5.0' _computing_molecular_graphics SHELXTL-PLUS _computing_publication_material SHELXL-93 _computing_structure_refinement 'SHELXL-93 (Sheldrick, 1993)' _computing_structure_solution 'SHELXS-86 (Sheldrick, 1990)' _diffrn_ambient_temperature 223(2) _diffrn_measurement_device 'Rigaku AFC%-5' _diffrn_measurement_method \w-scans _diffrn_radiation_monochromator graphite _diffrn_radiation_source 'normal-focus sealed tube' _diffrn_radiation_type MoK\a _diffrn_radiation_wavelength 0.71073 _diffrn_reflns_av_R_equivalents 0.0205 _diffrn_reflns_av_sigmaI/netI 0.0397 _diffrn_reflns_limit_h_max 9 _diffrn_reflns_limit_h_min -10 _diffrn_reflns_limit_k_max 10 _diffrn_reflns_limit_k_min 0 _diffrn_reflns_limit_l_max 22 _diffrn_reflns_limit_l_min -24 _diffrn_reflns_number 5097 _diffrn_reflns_theta_max 24.85 _diffrn_reflns_theta_min 2.15 _diffrn_standards_decay_% 0 _diffrn_standards_interval_count 150 _diffrn_standards_number 3 _exptl_absorpt_coefficient_mu 2.824 _exptl_absorpt_correction_T_max 0.568 _exptl_absorpt_correction_T_min 0.517 _exptl_absorpt_correction_type psi-scan _exptl_crystal_colour orange _exptl_crystal_density_diffrn 1.574 _exptl_crystal_density_method 'not measured' _exptl_crystal_description block _exptl_crystal_F_000 864 _exptl_crystal_size_max 0.25 _exptl_crystal_size_mid 0.25 _exptl_crystal_size_min 0.20 _refine_diff_density_max 0.908 _refine_diff_density_min -1.257 _refine_ls_extinction_coef 0.0013(4) _refine_ls_extinction_method SHELXL _refine_ls_goodness_of_fit_all 1.051 _refine_ls_goodness_of_fit_obs 1.080 _refine_ls_hydrogen_treatment constr _refine_ls_matrix_type full _refine_ls_number_parameters 416 _refine_ls_number_reflns 4756 _refine_ls_number_restraints 0 _refine_ls_restrained_S_all 1.056 _refine_ls_restrained_S_obs 1.080 _refine_ls_R_factor_all 0.0592 _refine_ls_R_factor_obs .0470 _refine_ls_shift/esd_max 0.002 _refine_ls_shift/esd_mean 0.000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_details 'w=1/[\s^2^(Fo^2^)+(0.0589P)^2^+11.8164P] where P=(Fo^2^+2Fc^2^)/3' _refine_ls_weighting_scheme calc _refine_ls_wR_factor_all 0.1418 _refine_ls_wR_factor_obs .1316 _reflns_number_observed 3991 _reflns_number_total 4758 _reflns_observed_criterion >2sigma(I) _cod_data_source_file qa0004.cif _cod_data_source_block 1 _cod_depositor_comments ; The following automatic conversions were performed: '_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic' according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29. Automatic conversion script Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius The following automatic conversions were performed: '_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic' according to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29. Automatic conversion script Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana The following automatic conversions were performed: '_refine_ls_weighting_scheme' value 'calc w=1/[\s^2^(Fo^2^)+(0.0589P)^2^+11.8164P] where P=(Fo^2^+2Fc^2^)/3' was changed to 'calc'. New tag '_refine_ls_weighting_details' was created. The value of the new tag was set to 'w=1/[\s^2^(Fo^2^)+(0.0589P)^2^+11.8164P] where P=(Fo^2^+2Fc^2^)/3'. Automatic conversion script Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas ; _cod_original_cell_volume 1820.1(6) _cod_database_code 2006247 loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Pd1 .0264(3) .0272(3) .0264(3) .0046(2) -.0011(2) -.0024(2) Br1 .0665(6) .0507(6) .0526(6) -.0012(4) -.0003(4) .0020(4) Br2 .0441(5) .0534(5) .0494(5) .0030(4) .0068(4) -.0018(4) P1 .0288(10) .0295(10) .0287(10) .0070(8) -.0008(8) -.0020(8) P2 .0245(9) .0311(10) .0274(9) .0054(8) -.0003(7) -.0024(8) C111 .038(4) .030(4) .026(4) .009(3) .001(3) -.002(3) C112 .052(5) .039(5) .046(5) .015(4) .001(4) .002(4) C113 .074(7) .052(6) .054(5) .034(5) .015(5) .015(4) C114 .111(9) .029(5) .049(5) .019(5) .021(6) .001(4) C115 .076(7) .041(5) .067(6) -.005(5) -.002(5) -.008(5) C116 .044(5) .041(5) .051(5) .007(4) -.007(4) -.010(4) C121 .028(4) .039(4) .028(4) .004(3) -.004(3) -.001(3) C122 .039(4) .042(5) .043(5) .010(4) .002(4) -.006(4) C123 .045(5) .070(6) .041(5) .015(4) .009(4) -.009(4) C124 .043(5) .078(7) .039(5) -.004(5) .007(4) .007(5) C125 .058(6) .052(5) .049(5) -.003(4) .001(4) .012(4) C126 .054(5) .036(5) .042(5) .005(4) .007(4) .001(4) C131 .027(4) .028(4) .039(4) .007(3) -.001(3) .003(3) C132 .036(4) .048(5) .033(4) .011(4) .002(3) -.002(3) C133 .046(5) .058(5) .045(5) .022(4) .014(4) .005(4) C134 .035(4) .058(5) .052(5) .018(4) .005(4) .015(4) C135 .047(5) .065(6) .040(5) .015(4) -.013(4) -.003(4) C136 .049(5) .051(5) .035(4) .022(4) -.006(4) -.008(4) C211 .029(4) .040(4) .026(4) .010(3) .000(3) .003(3) C212 .033(4) .063(6) .043(5) .013(4) -.001(4) -.017(4) C213 .047(5) .078(7) .043(5) .036(5) .013(4) .004(5) C214 .028(4) .070(6) .058(6) .003(4) .000(4) .014(5) C215 .035(5) .047(5) .069(6) .000(4) -.009(4) -.004(4) C216 .037(4) .036(4) .043(4) .003(3) -.002(3) .001(4) C221 .036(4) .025(4) .033(4) .002(3) .002(3) -.006(3) C222 .035(4) .043(5) .044(5) .002(3) .004(4) .003(4) C223 .048(5) .042(5) .052(5) .001(4) .013(4) .000(4) C224 .078(7) .044(5) .037(5) -.007(5) .015(5) .005(4) C225 .066(6) .054(5) .040(5) .011(5) -.006(4) .015(4) C226 .039(4) .045(5) .040(4) .010(4) -.001(4) .002(4) C231 .026(4) .031(4) .035(4) .004(3) .005(3) .002(3) C232 .037(4) .047(5) .031(4) .014(4) .002(3) -.001(3) C233 .054(5) .049(5) .041(5) .018(4) .009(4) -.009(4) C234 .058(5) .038(5) .056(6) .020(4) .021(4) .006(4) C235 .058(5) .047(5) .043(5) .025(4) .013(4) .015(4) C236 .042(4) .041(4) .034(4) .015(4) .009(3) .002(3) O1 .108(7) .140(9) .103(7) .014(6) .007(6) -.006(7) C1 .138(14) .129(13) .090(10) .008(11) .047(10) .021(9) C2 .114(13) .115(15) .27(3) .011(11) .043(16) .017(17) C3 .41(4) .074(11) .089(12) .021(17) -.027(17) .033(9) C4 .199(19) .128(15) .108(13) -.023(14) .064(13) .021(11) loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_thermal_displace_type _atom_site_calc_flag _atom_site_refinement_flags _atom_site_occupancy _atom_site_disorder_group _atom_site_type_symbol Pd1 .73514(5) .74706(5) .25547(2) .0268(2) Uani d . 1 . Pd Br1 .90861(10) .92286(10) .20917(4) .0578(3) Uani d . 1 . Br Br2 .56790(9) .56652(9) .30252(4) .0494(3) Uani d . 1 . Br P1 .8344(2) .8383(2) .35770(9) .0289(4) Uani d . 1 . P P2 .6500(2) .6484(2) .15245(8) .0277(4) Uani d . 1 . P C111 .8612(8) 1.0295(7) .3624(3) .031(2) Uani d . 1 . C C112 .7458(9) 1.0948(8) .3426(4) .045(2) Uani d . 1 . C H11A .6576(9) 1.0397(8) .3278(4) .054 Uiso calc R 1 . H C113 .7583(11) 1.2393(10) .3443(4) .057(2) Uani d . 1 . C H11B .6789(11) 1.2826(10) .3309(4) .068 Uiso calc R 1 . H C114 .8878(13) 1.3207(9) .3655(4) .062(3) Uani d . 1 . C H11C .8968(13) 1.4195(9) .3665(4) .074 Uiso calc R 1 . H C115 1.0019(11) 1.2577(9) .3850(5) .063(3) Uani d . 1 . C H11D 1.0902(11) 1.3135(9) .3990(5) .076 Uiso calc R 1 . H C116 .9901(9) 1.1111(8) .3845(4) .046(2) Uani d . 1 . C H11E 1.0690(9) 1.0683(8) .3991(4) .055 Uiso calc R 1 . H C121 .7385(7) .7900(8) .4311(3) .032(2) Uani d . 1 . C C122 .6755(8) .8846(8) .4674(4) .041(2) Uani d . 1 . C H12A .6802(8) .9782(8) .4548(4) .049 Uiso calc R 1 . H C123 .6044(9) .8412(10) .5231(4) .051(2) Uani d . 1 . C H12B .5606(9) .9060(10) .5476(4) .062 Uiso calc R 1 . H C124 .5974(9) .7057(10) .5425(4) .054(2) Uani d . 1 . C H12C .5492(9) .6773(10) .5801(4) .065 Uiso calc R 1 . H C125 .6608(10) .6133(10) .5070(4) .054(2) Uani d . 1 . C H12D .6570(10) .5202(10) .5201(4) .065 Uiso calc R 1 . H C126 .7310(9) .6539(8) .4516(4) .044(2) Uani d . 1 . C H12E .7744(9) .5881(8) .4275(4) .053 Uiso calc R 1 . H C131 1.0092(7) .7819(7) .3752(3) .031(2) Uani d . 1 . C C132 1.0761(8) .7169(8) .3264(4) .038(2) Uani d . 1 . C H13A 1.0297(8) .6993(8) .2846(4) .046 Uiso calc R 1 . H C133 1.2105(9) .6779(9) .3387(4) .048(2) Uani d . 1 . C H13B 1.2548(9) .6337(9) .3053(4) .057 Uiso calc R 1 . H C134 1.2802(9) .7032(9) .3995(4) .047(2) Uani d . 1 . C H13C 1.3731(9) .6794(9) .4073(4) .056 Uiso calc R 1 . H C135 1.2131(9) .7633(9) .4486(4) .051(2) Uani d . 1 . C H13D 1.2592(9) .7782(9) .4905(4) .061 Uiso calc R 1 . H C136 1.0777(9) .8024(8) .4371(4) .044(2) Uani d . 1 . C H13E 1.0322(9) .8429(8) .4713(4) .053 Uiso calc R 1 . H C211 .4530(7) .6108(8) .1429(3) .031(2) Uani d . 1 . C C212 .3752(8) .7072(9) .1699(4) .046(2) Uani d . 1 . C H21A .4239(8) .7868(9) .1941(4) .056 Uiso calc R 1 . H C213 .2261(9) .6873(10) .1615(4) .053(2) Uani d . 1 . C H21B .1737(9) .7542(10) .1794(4) .063 Uiso calc R 1 . H C214 .1535(9) .5695(10) .1270(4) .052(2) Uani d . 1 . C H21C .0519(9) .5556(10) .1217(4) .063 Uiso calc R 1 . H C215 .2291(9) .4743(9) .1009(4) .052(2) Uani d . 1 . C H21D .1797(9) .3939(9) .0775(4) .062 Uiso calc R 1 . H C216 .3801(8) .4942(8) .1083(4) .039(2) Uani d . 1 . C H21E .4319(8) .4278(8) .0896(4) .047 Uiso calc R 1 . H C221 .6960(8) .7504(7) .0808(3) .032(2) Uani d . 1 . C C222 .8413(8) .7708(8) .0631(4) .041(2) Uani d . 1 . C H22A .9118(8) .7336(8) .0884(4) .049 Uiso calc R 1 . H C223 .8800(9) .8448(8) .0091(4) .048(2) Uani d . 1 . C H22B .9769(9) .8576(8) -.0025(4) .057 Uiso calc R 1 . H C224 .7796(11) .8995(9) -.0275(4) .054(2) Uani d . 1 . C H22C .8072(11) .9500(9) -.0643(4) .065 Uiso calc R 1 . H C225 .6368(10) .8816(9) -.0109(4) .053(2) Uani d . 1 . C H22D .5674(10) .9198(9) -.0365(4) .064 Uiso calc R 1 . H C226 .5963(8) .8075(8) .0431(4) .041(2) Uani d . 1 . C H22E .4991(8) .7958(8) .0542(4) .049 Uiso calc R 1 . H C231 .7197(7) .4846(7) .1347(3) .030(2) Uani d . 1 . C C232 .7160(8) .4276(8) .0710(4) .038(2) Uani d . 1 . C H23A .6798(8) .4752(8) .0362(4) .045 Uiso calc R 1 . H C233 .7651(9) .3018(9) .0592(4) .047(2) Uani d . 1 . C H23B .7614(9) .2635(9) .0162(4) .056 Uiso calc R 1 . H C234 .8191(9) .2319(8) .1089(4) .049(2) Uani d . 1 . C H23C .8509(9) .1453(8) .1001(4) .058 Uiso calc R 1 . H C235 .8273(9) .2879(9) .1719(4) .047(2) Uani d . 1 . C H23D .8663(9) .2405(9) .2061(4) .057 Uiso calc R 1 . H C236 .7778(8) .4141(8) .1845(4) .038(2) Uani d . 1 . C H23E .7838(8) .4524(8) .2276(4) .046 Uiso calc R 1 . H O1 .4270(11) 1.0129(11) .2580(5) .118(3) Uani d . 1 . O C1 .3183(18) 1.0605(18) .2881(7) .118(5) Uani d . 1 . C H1A .3458(18) 1.0785(18) .3347(7) .142 Uiso calc R 1 . H H1B .2321(18) .9882(18) .2840(7) .142 Uiso calc R 1 . H C2 .284(2) 1.189(2) .2604(13) .165(8) Uani d . 1 . C H2A .181(2) 1.180(2) .2464(13) .198 Uiso calc R 1 . H H2B .309(2) 1.270(2) .2916(13) .198 Uiso calc R 1 . H C3 .374(4) 1.2021(18) .2057(8) .191(13) Uani d . 1 . C H3A .315(4) 1.2049(18) .1652(8) .230 Uiso calc R 1 . H H3B .444(4) 1.2893(18) .2107(8) .230 Uiso calc R 1 . H C4 .445(2) 1.088(2) .2032(8) .148(7) Uani d . 1 . C H4A .549(2) 1.120(2) .1988(8) .177 Uiso calc R 1 . H H4B .409(2) 1.027(2) .1647(8) .177 Uiso calc R 1 . H 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' P P 0.1023 0.0942 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' Br Br -0.2901 2.4595 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' Pd Pd -0.9988 1.0072 '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' loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle _geom_angle_publ_flag P1 Pd1 P2 176.06(6) y P1 Pd1 Br1 86.82(6) y P2 Pd1 Br1 92.18(6) y P1 Pd1 Br2 92.76(6) y P2 Pd1 Br2 88.12(6) y Br1 Pd1 Br2 178.09(4) y C111 P1 C131 108.0(3) ? C111 P1 C121 103.6(3) ? C131 P1 C121 102.2(3) ? C111 P1 Pd1 111.8(2) ? C131 P1 Pd1 110.6(2) ? C121 P1 Pd1 119.7(2) ? C211 P2 C231 107.7(3) ? C211 P2 C221 102.2(3) ? C231 P2 C221 102.8(3) ? C211 P2 Pd1 113.3(2) ? C231 P2 Pd1 111.5(2) ? C221 P2 Pd1 118.3(2) ? C112 C111 C116 119.3(7) ? C112 C111 P1 117.5(6) ? C116 C111 P1 123.3(6) ? C113 C112 C111 120.8(8) ? C112 C113 C114 119.9(8) ? C115 C114 C113 119.8(8) ? C114 C115 C116 120.9(9) ? C111 C116 C115 119.3(8) ? C122 C121 C126 118.5(7) ? C122 C121 P1 122.5(6) ? C126 C121 P1 119.0(5) ? C121 C122 C123 119.7(8) ? C124 C123 C122 121.1(8) ? C125 C124 C123 119.0(8) ? C124 C125 C126 120.8(8) ? C125 C126 C121 120.9(8) ? C132 C131 C136 118.7(6) ? C132 C131 P1 120.1(5) ? C136 C131 P1 121.2(5) ? C133 C132 C131 120.4(7) ? C134 C133 C132 120.6(7) ? C135 C134 C133 119.4(7) ? C134 C135 C136 120.7(7) ? C135 C136 C131 120.1(7) ? C216 C211 C212 119.1(7) ? C216 C211 P2 123.0(5) ? C212 C211 P2 117.9(6) ? C211 C212 C213 120.3(8) ? C214 C213 C212 120.3(8) ? C215 C214 C213 119.7(7) ? C214 C215 C216 120.6(8) ? C211 C216 C215 120.1(7) ? C226 C221 C222 118.2(7) ? C226 C221 P2 123.5(6) ? C222 C221 P2 118.3(6) ? C223 C222 C221 120.2(7) ? C224 C223 C222 120.4(8) ? C223 C224 C225 120.4(8) ? C226 C225 C224 119.8(8) ? C221 C226 C225 121.0(8) ? C236 C231 C232 118.5(6) ? C236 C231 P2 120.3(5) ? C232 C231 P2 121.2(5) ? C233 C232 C231 120.0(7) ? C234 C233 C232 120.9(7) ? C233 C234 C235 120.1(7) ? C234 C235 C236 119.6(7) ? C235 C236 C231 120.8(7) ? C1 O1 C4 105.8(13) ? O1 C1 C2 111.5(13) ? C3 C2 C1 101.9(15) ? C4 C3 C2 107.9(14) ? C3 C4 O1 111.1(15) ? loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_site_symmetry_2 _geom_bond_distance _geom_bond_publ_flag Pd1 P1 . 2.336(2) y Pd1 P2 . 2.337(2) y Pd1 Br1 . 2.4148(13) y Pd1 Br2 . 2.4169(13) y P1 C111 . 1.815(7) ? P1 C131 . 1.823(7) ? P1 C121 . 1.830(7) ? P2 C211 . 1.823(7) ? P2 C231 . 1.824(7) ? P2 C221 . 1.831(7) ? C111 C112 . 1.380(10) ? C111 C116 . 1.381(10) ? C112 C113 . 1.375(12) ? C113 C114 . 1.380(14) ? C114 C115 . 1.356(14) ? C115 C116 . 1.396(12) ? C121 C122 . 1.372(10) ? C121 C126 . 1.382(10) ? C122 C123 . 1.397(11) ? C123 C124 . 1.369(12) ? C124 C125 . 1.351(12) ? C125 C126 . 1.380(11) ? C131 C132 . 1.384(10) ? C131 C136 . 1.389(10) ? C132 C133 . 1.380(11) ? C133 C134 . 1.375(11) ? C134 C135 . 1.368(11) ? C135 C136 . 1.387(11) ? C211 C216 . 1.373(10) ? C211 C212 . 1.379(10) ? C212 C213 . 1.380(11) ? C213 C214 . 1.380(12) ? C214 C215 . 1.350(12) ? C215 C216 . 1.397(11) ? C221 C226 . 1.374(10) ? C221 C222 . 1.411(10) ? C222 C223 . 1.374(11) ? C223 C224 . 1.355(12) ? C224 C225 . 1.382(12) ? C225 C226 . 1.378(11) ? C231 C236 . 1.383(10) ? C231 C232 . 1.394(10) ? C232 C233 . 1.375(11) ? C233 C234 . 1.360(11) ? C234 C235 . 1.376(11) ? C235 C236 . 1.382(11) ? O1 C1 . 1.34(2) ? O1 C4 . 1.36(2) ? C1 C2 . 1.45(2) ? C2 C3 . 1.44(2) ? C3 C4 . 1.36(2) ?