#------------------------------------------------------------------------------ #$Date: 2013-12-28 15:58:47 +0200 (Sat, 28 Dec 2013) $ #$Revision: 91933 $ #$URL: file:///home/coder/svn-repositories/cod/cif/2/00/69/2006909.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_2006909 loop_ _publ_author_name 'Kazuyoshi Nishikawa' 'Harumichi Tsukada' 'Satoshi Abe' 'Shintaro Misaki' 'Noritake Yasuoka' _publ_contact_author ; Mr KAZUYOSHI NISHIKAWA Research Center Daicel Chemical Industries, Ltd. Himeji Hyogo Japan 671-12 ; _publ_section_title (R,R)-({-})-trans-2,3-Bis(hydroxydiphenylmethyl)-1,4-dioxaspiro[4.5]decane _journal_issue 1 _journal_name_full 'Acta Crystallographica Section C' _journal_page_first 111 _journal_page_last 112 _journal_volume 54 _journal_year 1998 _chemical_formula_moiety 'C34 H34 O4 ' _chemical_formula_sum 'C34 H34 O4' _chemical_formula_weight 506.64 _space_group_IT_number 19 _symmetry_cell_setting orthorhombic _symmetry_space_group_name_Hall 'P 2ac 2ab' _symmetry_space_group_name_H-M 'P 21 21 21' _audit_creation_method 'from TEXRAY.INF file' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_formula_units_Z 4 _cell_length_a 10.210(7) _cell_length_b 29.279(3) _cell_length_c 9.314(4) _cell_measurement_reflns_used 25 _cell_measurement_temperature 296.2 _cell_measurement_theta_max 14.1 _cell_measurement_theta_min 10.2 _cell_volume 2784(2) _computing_cell_refinement 'MSC/AFC Diffractometer Control Software' _computing_data_collection ;MSC/AFC Diffractometer Control Software (Molecular Structure Corporation, 1992) ; _computing_data_reduction 'TEXSAN (Molecular Structure Corporation, 1995)' _computing_publication_material TEXSAN _computing_structure_refinement TEXSAN _computing_structure_solution 'SAPI91 (Fan, 1991) and DIRDIF94 (Beurskens et al., 1994)' _diffrn_ambient_temperature 296.2 _diffrn_measurement_device 'Rigaku AFC5R' _diffrn_measurement_method \w _diffrn_radiation_monochromator graphite _diffrn_radiation_source 'Rigaku rotating anode' _diffrn_radiation_type 'Mo K\a' _diffrn_radiation_wavelength 0.7107 _diffrn_reflns_av_R_equivalents 0.00 _diffrn_reflns_av_sigmaI/netI 0.108 _diffrn_reflns_limit_h_max 13 _diffrn_reflns_limit_h_min 0 _diffrn_reflns_limit_k_max 38 _diffrn_reflns_limit_k_min 0 _diffrn_reflns_limit_l_max 12 _diffrn_reflns_limit_l_min 0 _diffrn_reflns_number 3640 _diffrn_reflns_reduction_process 'Lp corrections applied' _diffrn_reflns_theta_max 27.50 _diffrn_reflns_theta_min 2.59 _diffrn_standards_decay_% -1.43 _diffrn_standards_interval_count 150 _diffrn_standards_number 3 _exptl_absorpt_coefficient_mu 0.078 _exptl_absorpt_correction_T_max 0.985 _exptl_absorpt_correction_T_min 0.972 _exptl_absorpt_correction_type 'analytical (North, Phillips & Mathews, 1968)' _exptl_crystal_colour colorless _exptl_crystal_density_diffrn 1.209 _exptl_crystal_density_meas 'not measured' _exptl_crystal_description prismatic _exptl_crystal_F_000 1080.00 _exptl_crystal_size_max 0.400 _exptl_crystal_size_mid 0.400 _exptl_crystal_size_min 0.200 _refine_diff_density_max 0.31 _refine_diff_density_min -0.39 _refine_ls_extinction_coef 0.0100(10) _refine_ls_extinction_method 'Zachariasen (1967) type 2 Gaussian isotropic' _refine_ls_goodness_of_fit_all 1.109 _refine_ls_goodness_of_fit_obs 1.109 _refine_ls_matrix_type full _refine_ls_number_constraints 0 _refine_ls_number_parameters 344 _refine_ls_number_reflns 3612 _refine_ls_number_restraints 0 _refine_ls_R_factor_all 0.0671 _refine_ls_R_factor_obs .0671 _refine_ls_shift/esd_max 0.0000 _refine_ls_shift/esd_mean 0.0000 _refine_ls_structure_factor_coef Fsqd _refine_ls_weighting_scheme 'w = 1/[\s^2^(Fo) + 0.00090|Fo|^2^]' _refine_ls_wR_factor_all 0.1049 _refine_ls_wR_factor_obs .1049 _reflns_number_observed 3612 _reflns_number_total 3640 _reflns_observed_criterion I>0 _[local]_cod_data_source_file de1056.cif _[local]_cod_data_source_block DE1056 _[local]_cod_cif_authors_sg_H-M 'P 21 21 21 ' _[local]_cod_chemical_formula_sum_orig 'C34 H34 O4 ' _cod_original_cell_volume 2784.0(10) _cod_database_code 2006909 loop_ _symmetry_equiv_pos_as_xyz ' +x, +y, +z' '1/2-x, -y,1/2+z' '1/2+x,1/2-y, -z' ' -x,1/2+y,1/2-z' 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_calc_attached_atom _atom_site_refinement_flags _atom_site_occupancy O(1) .5164(2) .33100(10) .5638(2) .0470(6) Uani d . . 1.00 O(2) .6899(2) .35180(10) .4232(2) .0438(6) Uani d . . 1.00 O(3) .5631(2) .42430(10) .8168(2) .0571(7) Uani d . . 1.00 O(4) .7663(2) .44780(10) .6495(2) .0560(7) Uani d . . 1.00 C(1) .5844(3) .31980(10) .4345(3) .0387(8) Uani d . . 1.00 C(2) .5569(3) .37520(10) .6098(3) .0390(8) Uani d . . 1.00 C(3) .6978(3) .37800(10) .5511(3) .0374(8) Uani d . . 1.00 C(4) .6389(3) .27170(10) .4477(4) .0520(10) Uani d . . 1.00 C(5) .5316(4) .23560(10) .4450(4) .0600(10) Uani d . . 1.00 C(6) .4481(4) .24100(10) .3117(4) .0630(10) Uani d . . 1.00 C(7) .3901(3) .28870(10) .3029(4) .0600(10) Uani d . . 1.00 C(8) .4966(3) .32500(10) .3060(3) .0470(9) Uani d . . 1.00 C(9) .5329(3) .37850(10) .7737(3) .0401(8) Uani d . . 1.00 C(10) .6143(3) .34380(10) .8591(3) .0500(10) Uani d . . 1.00 C(11) .7182(4) .3572(2) .9429(4) .0770(10) Uani d . . 1.00 C(12) .7875(4) .3241(3) 1.0258(5) .106(2) Uani d . . 1.00 C(13) .7492(6) .2796(2) 1.0207(6) .117(2) Uani d . . 1.00 C(14) .6473(6) .26580(10) .9368(5) .093(2) Uani d . . 1.00 C(15) .5801(4) .29770(10) .8558(4) .0630(10) Uani d . . 1.00 C(16) .3875(3) .37330(10) .8109(3) .0432(9) Uani d . . 1.00 C(17) .3522(4) .36720(10) .9520(4) .0660(10) Uani d . . 1.00 C(18) .2208(5) .3647(2) .9926(5) .084(2) Uani d . . 1.00 C(19) .1247(4) .36880(10) .8923(6) .081(2) Uani d . . 1.00 C(20) .1573(4) .3753(2) .7540(5) .090(2) Uani d . . 1.00 C(21) .2883(4) .3775(2) .7130(4) .0750(10) Uani d . . 1.00 C(22) .7504(3) .42600(10) .5107(3) .0391(8) Uani d . . 1.00 C(23) .6515(3) .45230(10) .4207(3) .0437(9) Uani d . . 1.00 C(24) .5767(4) .48720(10) .4786(4) .0700(10) Uani d . . 1.00 C(25) .4823(5) .50880(10) .3952(6) .092(2) Uani d . . 1.00 C(26) .4607(4) .4961(2) .2570(6) .092(2) Uani d . . 1.00 C(27) .5343(4) .46160(10) .1969(4) .0730(10) Uani d . . 1.00 C(28) .6305(4) .44020(10) .2785(4) .0530(10) Uani d . . 1.00 C(29) .8847(3) .42440(10) .4394(3) .0429(8) Uani d . . 1.00 C(30) .9586(3) .38500(10) .4230(4) .0540(10) Uani d . . 1.00 C(31) 1.0853(4) .38730(10) .3684(4) .0700(10) Uani d . . 1.00 C(32) 1.1384(4) .42850(10) .3286(5) .0760(10) Uani d . . 1.00 C(33) 1.0654(4) .46720(10) .3401(4) .0670(10) Uani d . . 1.00 C(34) .9405(3) .46530(10) .3943(4) .0550(10) Uani d . . 1.00 H(1) .5032 .3987 .5603 .0512 Uiso calc C(2) . 1.00 H(2) .7581 .3639 .6213 .0492 Uiso calc C(3) . 1.00 H(3) .6882 .2691 .5358 .0641 Uiso calc C(4) . 1.00 H(4) .6994 .2655 .3700 .0641 Uiso calc C(4) . 1.00 H(5) .4777 .2398 .5285 .0697 Uiso calc C(5) . 1.00 H(6) .5693 .2058 .4493 .0697 Uiso calc C(5) . 1.00 H(7) .3798 .2183 .3108 .0737 Uiso calc C(6) . 1.00 H(8) .5016 .2356 .2274 .0737 Uiso calc C(6) . 1.00 H(9) .3317 .2939 .3829 .0717 Uiso calc C(7) . 1.00 H(10) .3366 .2921 .2165 .0717 Uiso calc C(7) . 1.00 H(11) .4575 .3551 .3036 .0572 Uiso calc C(8) . 1.00 H(12) .5473 .3223 .2175 .0572 Uiso calc C(8) . 1.00 H(13) .7452 .3901 .9432 .0960 Uiso calc C(11) . 1.00 H(14) .8603 .3343 1.0872 .1272 Uiso calc C(12) . 1.00 H(15) .7955 .2572 1.0803 .1450 Uiso calc C(13) . 1.00 H(16) .6267 .2336 .9325 .1118 Uiso calc C(14) . 1.00 H(17) .5081 .2874 .7934 .0772 Uiso calc C(15) . 1.00 H(18) .4187 .3663 1.0283 .0754 Uiso calc C(17) . 1.00 H(19) .1967 .3583 1.0920 .0979 Uiso calc C(18) . 1.00 H(20) .0308 .3673 .9201 .0976 Uiso calc C(19) . 1.00 H(21) .0862 .3762 .6790 .1052 Uiso calc C(20) . 1.00 H(22) .3041 .3846 .6100 .0951 Uiso calc C(21) . 1.00 H(23) .5963 .4983 .5737 .0901 Uiso calc C(24) . 1.00 H(24) .4251 .5323 .4319 .1056 Uiso calc C(25) . 1.00 H(25) .3939 .5114 .1986 .1045 Uiso calc C(26) . 1.00 H(26) .5209 .4525 .0995 .0902 Uiso calc C(27) . 1.00 H(27) .6849 .4162 .2360 .0625 Uiso calc C(28) . 1.00 H(28) .9225 .3558 .4508 .0646 Uiso calc C(30) . 1.00 H(29) 1.1359 .3590 .3563 .0852 Uiso calc C(31) . 1.00 H(30) 1.2289 .4297 .2975 .0874 Uiso calc C(32) . 1.00 H(31) 1.1035 .4959 .3082 .0796 Uiso calc C(33) . 1.00 H(32) .8862 .4936 .4006 .0679 Uiso calc C(34) . 1.00 H(33) .6373 .4427 .7642 .0901 Uiso d . . 1.00 H(34) .8505 .4618 .6593 .0901 Uiso d . . 1.00 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 O(1) .0570(10) .0400(10) .0440(10) -.0210(10) .0110(10) -.0070(10) O(2) .0520(10) .0380(10) .0420(10) -.0160(10) .0090(10) -.0090(10) O(3) .075(2) .0440(10) .0530(10) -.0200(10) .0140(10) -.0140(10) O(4) .069(2) .0540(10) .0450(10) -.0300(10) .0080(10) -.0160(10) C(1) .041(2) .0330(10) .042(2) -.0060(10) .002(2) .0010(10) C(2) .047(2) .0320(10) .038(2) -.0060(10) -.0010(10) .0000(10) C(3) .045(2) .0340(10) .034(2) -.0060(10) .0010(10) -.0020(10) C(4) .052(2) .039(2) .064(2) -.001(2) -.004(2) .002(2) C(5) .067(2) .033(2) .080(3) -.007(2) .004(2) .004(2) C(6) .061(2) .050(2) .076(2) -.021(2) .001(2) -.018(2) C(7) .056(2) .063(2) .060(2) -.011(2) -.010(2) .003(2) C(8) .052(2) .042(2) .048(2) -.001(2) -.003(2) .002(2) C(9) .048(2) .036(2) .037(2) -.008(2) .002(2) -.0020(10) C(10) .044(2) .070(2) .035(2) .004(2) .010(2) .007(2) C(11) .055(2) .127(4) .050(2) -.004(2) .006(2) .018(3) C(12) .046(2) .213(6) .060(3) .012(4) .007(2) .036(4) C(13) .077(4) .188(6) .087(4) .061(4) .034(3) .060(5) C(14) .113(4) .085(3) .082(3) .053(3) .041(3) .033(3) C(15) .076(3) .059(2) .054(2) .019(2) .017(2) .012(2) C(16) .050(2) .037(2) .043(2) .0040(10) .008(2) -.0050(10) C(17) .057(2) .087(3) .054(2) .010(2) .013(2) .013(2) C(18) .084(3) .090(3) .078(3) .008(3) .036(3) .015(2) C(19) .054(3) .078(3) .109(4) -.001(2) .018(3) -.009(3) C(20) .054(3) .133(4) .084(3) .005(3) .001(2) -.014(3) C(21) .054(2) .119(3) .053(2) .003(2) .009(2) .002(2) C(22) .048(2) .0350(10) .035(2) -.008(2) .0020(10) -.0020(10) C(23) .049(2) .0330(10) .049(2) -.0090(10) .009(2) .0110(10) C(24) .079(3) .050(2) .080(3) .008(2) .019(2) .012(2) C(25) .085(3) .078(3) .113(4) .032(3) .037(3) .033(3) C(26) .055(3) .090(3) .132(4) .000(3) .007(3) .057(3) C(27) .074(3) .068(2) .076(3) -.026(2) -.017(3) .033(2) C(28) .066(2) .040(2) .054(2) -.011(2) -.004(2) .013(2) C(29) .049(2) .044(2) .036(2) -.010(2) -.002(2) .0040(10) C(30) .055(2) .046(2) .063(2) -.004(2) .009(2) .012(2) C(31) .057(2) .068(2) .083(3) .008(2) .020(2) .016(2) C(32) .053(2) .086(3) .089(3) -.007(2) .021(2) .015(3) C(33) .061(2) .061(2) .080(3) -.020(2) .016(2) .011(2) C(34) .058(2) .048(2) .058(2) -.012(2) .005(2) .005(2) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_site_symmetry_1 _geom_bond_site_symmetry_2 _geom_bond_distance _geom_bond_publ_flag O(1) C(1) 1_555 1_555 1.429(3) yes O(1) C(2) 1_555 1_555 1.425(3) yes O(2) C(1) 1_555 1_555 1.431(3) yes O(2) C(3) 1_555 1_555 1.419(3) yes O(3) C(9) 1_555 1_555 1.433(3) yes O(4) C(22) 1_555 1_555 1.451(3) yes C(1) C(4) 1_555 1_555 1.520(4) yes C(1) C(8) 1_555 1_555 1.503(4) yes C(2) C(3) 1_555 1_555 1.541(4) yes C(2) C(9) 1_555 1_555 1.549(4) yes C(3) C(22) 1_555 1_555 1.550(4) yes C(4) C(5) 1_555 1_555 1.521(4) yes C(5) C(6) 1_555 1_555 1.514(5) yes C(6) C(7) 1_555 1_555 1.518(4) yes C(7) C(8) 1_555 1_555 1.521(4) yes C(9) C(10) 1_555 1_555 1.535(4) no C(9) C(16) 1_555 1_555 1.532(4) no C(10) C(11) 1_555 1_555 1.374(5) no C(10) C(15) 1_555 1_555 1.396(4) no C(11) C(12) 1_555 1_555 1.427(6) no C(12) C(13) 1_555 1_555 1.362(8) no C(13) C(14) 1_555 1_555 1.363(7) no C(14) C(15) 1_555 1_555 1.383(5) no C(16) C(17) 1_555 1_555 1.374(4) no C(16) C(21) 1_555 1_555 1.369(5) no C(17) C(18) 1_555 1_555 1.396(5) no C(18) C(19) 1_555 1_555 1.360(6) no C(19) C(20) 1_555 1_555 1.344(6) no C(20) C(21) 1_555 1_555 1.392(5) no C(22) C(23) 1_555 1_555 1.523(4) no C(22) C(29) 1_555 1_555 1.524(4) no C(23) C(24) 1_555 1_555 1.384(4) no C(23) C(28) 1_555 1_555 1.388(4) no C(24) C(25) 1_555 1_555 1.391(6) no C(25) C(26) 1_555 1_555 1.358(7) no C(26) C(27) 1_555 1_555 1.380(6) no C(27) C(28) 1_555 1_555 1.390(5) no C(29) C(30) 1_555 1_555 1.388(4) no C(29) C(34) 1_555 1_555 1.392(4) no C(30) C(31) 1_555 1_555 1.393(5) no C(31) C(32) 1_555 1_555 1.374(5) no C(32) C(33) 1_555 1_555 1.361(5) no C(33) C(34) 1_555 1_555 1.372(5) no loop_ _atom_type_symbol _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source C 0.003 0.002 ;International Tables for Crystallography (1992, Vol. C, Tables 4.2.6.8 and 6.1.1.1) ; H 0.000 0.000 ;International Tables for Crystallography (1992, Vol. C, Table 6.1.1.2) ; O 0.011 0.006 ;International Tables for Crystallography (1992, Vol. C, Tables 4.2.6.8 and 6.1.1.1) ; loop_ _diffrn_standard_refln_index_h _diffrn_standard_refln_index_k _diffrn_standard_refln_index_l -1 1 -2 -1 -3 -2 -1 3 -2 loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle_site_symmetry_1 _geom_angle_site_symmetry_2 _geom_angle_site_symmetry_3 _geom_angle _geom_angle_publ_flag C(1) O(1) C(2) 1_555 1_555 1_555 108.7(2) yes C(1) O(2) C(3) 1_555 1_555 1_555 109.6(2) yes O(1) C(1) O(2) 1_555 1_555 1_555 106.1(2) yes O(1) C(1) C(4) 1_555 1_555 1_555 108.8(2) yes O(1) C(1) C(8) 1_555 1_555 1_555 110.9(2) yes O(2) C(1) C(4) 1_555 1_555 1_555 109.7(2) yes O(2) C(1) C(8) 1_555 1_555 1_555 108.9(2) yes C(4) C(1) C(8) 1_555 1_555 1_555 112.1(2) yes O(1) C(2) C(3) 1_555 1_555 1_555 102.2(2) yes O(1) C(2) C(9) 1_555 1_555 1_555 107.9(2) yes C(3) C(2) C(9) 1_555 1_555 1_555 119.6(3) yes O(2) C(3) C(2) 1_555 1_555 1_555 102.5(2) yes O(2) C(3) C(22) 1_555 1_555 1_555 107.8(2) yes C(2) C(3) C(22) 1_555 1_555 1_555 117.2(2) yes C(1) C(4) C(5) 1_555 1_555 1_555 112.2(3) yes C(4) C(5) C(6) 1_555 1_555 1_555 110.3(3) yes C(5) C(6) C(7) 1_555 1_555 1_555 111.1(3) yes C(6) C(7) C(8) 1_555 1_555 1_555 111.3(3) yes C(1) C(8) C(7) 1_555 1_555 1_555 111.8(2) yes O(3) C(9) C(2) 1_555 1_555 1_555 107.5(2) yes O(3) C(9) C(10) 1_555 1_555 1_555 110.9(2) no O(3) C(9) C(16) 1_555 1_555 1_555 103.8(2) no C(2) C(9) C(10) 1_555 1_555 1_555 112.5(3) no C(2) C(9) C(16) 1_555 1_555 1_555 111.7(2) no C(10) C(9) C(16) 1_555 1_555 1_555 110.0(2) no C(9) C(10) C(11) 1_555 1_555 1_555 121.6(3) no C(9) C(10) C(15) 1_555 1_555 1_555 119.6(3) no C(11) C(10) C(15) 1_555 1_555 1_555 118.8(4) no C(10) C(11) C(12) 1_555 1_555 1_555 119.8(4) no C(11) C(12) C(13) 1_555 1_555 1_555 119.2(5) no C(12) C(13) C(14) 1_555 1_555 1_555 121.5(5) no C(13) C(14) C(15) 1_555 1_555 1_555 119.4(5) no C(10) C(15) C(14) 1_555 1_555 1_555 121.2(4) no C(9) C(16) C(17) 1_555 1_555 1_555 118.9(3) no C(9) C(16) C(21) 1_555 1_555 1_555 123.9(3) no C(17) C(16) C(21) 1_555 1_555 1_555 117.1(3) no C(16) C(17) C(18) 1_555 1_555 1_555 121.2(4) no C(17) C(18) C(19) 1_555 1_555 1_555 120.2(4) no C(18) C(19) C(20) 1_555 1_555 1_555 119.4(4) no C(19) C(20) C(21) 1_555 1_555 1_555 120.6(4) no C(16) C(21) C(20) 1_555 1_555 1_555 121.5(4) no O(4) C(22) C(3) 1_555 1_555 1_555 102.8(2) yes O(4) C(22) C(23) 1_555 1_555 1_555 110.0(2) no O(4) C(22) C(29) 1_555 1_555 1_555 107.5(2) no C(3) C(22) C(23) 1_555 1_555 1_555 111.3(2) no C(3) C(22) C(29) 1_555 1_555 1_555 113.0(2) no C(23) C(22) C(29) 1_555 1_555 1_555 111.8(2) no C(22) C(23) C(24) 1_555 1_555 1_555 121.7(3) no C(22) C(23) C(28) 1_555 1_555 1_555 119.9(3) no C(24) C(23) C(28) 1_555 1_555 1_555 118.3(3) no C(23) C(24) C(25) 1_555 1_555 1_555 120.1(4) no C(24) C(25) C(26) 1_555 1_555 1_555 121.1(4) no C(25) C(26) C(27) 1_555 1_555 1_555 119.8(4) no C(26) C(27) C(28) 1_555 1_555 1_555 119.5(4) no C(23) C(28) C(27) 1_555 1_555 1_555 121.1(3) no C(22) C(29) C(30) 1_555 1_555 1_555 124.2(3) no C(22) C(29) C(34) 1_555 1_555 1_555 118.3(3) no C(30) C(29) C(34) 1_555 1_555 1_555 117.4(3) no C(29) C(30) C(31) 1_555 1_555 1_555 120.4(3) no C(30) C(31) C(32) 1_555 1_555 1_555 120.5(3) no C(31) C(32) C(33) 1_555 1_555 1_555 119.6(3) no C(32) C(33) C(34) 1_555 1_555 1_555 120.3(3) no C(29) C(34) C(33) 1_555 1_555 1_555 121.8(3) no loop_ _geom_contact_atom_site_label_1 _geom_contact_atom_site_label_2 _geom_contact_distance _geom_contact_site_symmetry_1 _geom_contact_site_symmetry_2 _geom_contact_publ_flag O(3) C(34) 3.312(4) 1_555 2_665 no O(3) C(33) 3.444(4) 1_555 2_665 no O(4) C(27) 3.374(4) 1_555 2_665 no O(4) C(26) 3.386(5) 1_555 2_665 no C(27) C(34) 3.549(5) 1_555 2_664 no O(3) O(4) 2.684(3) 1_555 2_555 no _journal_paper_doi 10.1107/S010827019700992X