cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17188/1287579
title: Materials Data on Al2Si2H5C2NO10 by Materials Project

description: Al2Si2(HO3)3C2NH2O crystallizes in the monoclinic Cc space group. The structure is two-dimensional and consists of four n-methylformamide molecules and two Al2Si2(HO3)3 sheets oriented in the (0, 0, 1) direction. In each Al2Si2(HO3)3 sheet, there are two inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to six O2- atoms to form AlO6 octahedra that share corners with two SiO4 tetrahedra and edges with three equivalent AlO6 octahedra. There are a spread of Al–O bond distances ranging from 1.87–2.05 Å. In the second Al3+ site, Al3+ is bonded to six O2- atoms to form AlO6 octahedra that share corners with two SiO4 tetrahedra and edges with three equivalent AlO6 octahedra. There are a spread of Al–O bond distances ranging from 1.87–2.01 Å. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two AlO6 octahedra and corners with three equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 51–56°. There are a spread of Si–O bond distances ranging from 1.62–1.66 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form SiO4 tetrahedra that share corners with two AlO6 octahedra and corners with three equivalent SiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 52–55°. There are a spread of Si–O bond distances ranging from 1.62–1.65 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two Al3+ and one H1+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two Al3+ and one H1+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to two Si4+ atoms. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two Si4+ atoms. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two Si4+ atoms. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Al3+ and one Si4+ atom. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two Al3+ and one Si4+ atom. In the eighth O2- site, O2- is bonded in a water-like geometry to two Al3+ atoms. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Al3+ and one H1+ atom.
DOI: 10.17188/1287580
title: Materials Data on Ba(HO)2 by Materials Project

description: Ba(OH)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Ba–O bond distances ranging from 2.63–2.81 Å. In the second Ba2+ site, Ba2+ is bonded in a 9-coordinate geometry to two H1+ and seven O2- atoms. There are one shorter (2.86 Å) and one longer (3.01 Å) Ba–H bond lengths. There are a spread of Ba–O bond distances ranging from 2.61–2.88 Å. In the third Ba2+ site, Ba2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Ba–O bond distances ranging from 2.66–3.01 Å. There are six inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one Ba2+ and one O2- atom. The H–O bond length is 0.98 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one Ba2+ and one O2- atom. The H–O bond length is 0.97 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to three Ba2+ and one H1+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to three Ba2+ and one H1+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to three Ba2+ and one H1+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to two Ba2+ and one H1+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to three Ba2+ and one H1+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to three Ba2+ and one H1+ atom.
DOI: 10.17188/1287582
title: Materials Data on Na2Mn(H2N)4 by Materials Project

description: Na2Mn(NH2)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 7-coordinate geometry to six N3- and five H1+ atoms. There are a spread of Na–N bond distances ranging from 2.48–2.95 Å. There are a spread of Na–H bond distances ranging from 2.41–2.64 Å. In the second Na1+ site, Na1+ is bonded in a 2-coordinate geometry to four N3- and three H1+ atoms. There are a spread of Na–N bond distances ranging from 2.47–2.63 Å. There are a spread of Na–H bond distances ranging from 2.33–2.56 Å. Mn2+ is bonded in a tetrahedral geometry to four N3- atoms. There are a spread of Mn–N bond distances ranging from 1.98–2.08 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a 2-coordinate geometry to two Na1+, one Mn2+, and two H1+ atoms. There is one shorter (1.03 Å) and one longer (1.04 Å) N–H bond length. In the second N3- site, N3- is bonded in a distorted water-like geometry to three Na1+, one Mn2+, and two H1+ atoms. Both N–H bond lengths are 1.03 Å. In the third N3- site, N3- is bonded in a 2-coordinate geometry to two Na1+, one Mn2+, and two H1+ atoms. Both N–H bond lengths are 1.03 Å. In the fourth N3- site, N3- is bonded in a distorted water-like geometry to three Na1+, one Mn2+, and two H1+ atoms. There is one shorter (1.03 Å) and one longer (1.04 Å) N–H bond length. There are eight inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one Na1+ and one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to two Na1+ and one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one Na1+ and one N3- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one Na1+ and one N3- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one Na1+ and one N3- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one Na1+ and one N3- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one Na1+ and one N3- atom.
DOI: 10.17188/1287583
title: Materials Data on FeH16C4S4(N4Cl)2 by Materials Project

description: FeC4H16S4(N4Cl)2 is Tungsten-like structured and crystallizes in the tetragonal P4_2/n space group. The structure is zero-dimensional and consists of four FeC4H16S4(N4Cl)2 clusters. Fe2+ is bonded in an octahedral geometry to four S2- and two equivalent Cl1- atoms. There are two shorter (2.50 Å) and two longer (2.58 Å) Fe–S bond lengths. Both Fe–Cl bond lengths are 2.55 Å. There are two inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a distorted trigonal planar geometry to two N3- and one S2- atom. Both C–N bond lengths are 1.34 Å. The C–S bond length is 1.72 Å. In the second C4+ site, C4+ is bonded in a distorted trigonal planar geometry to two N3- and one S2- atom. There is one shorter (1.33 Å) and one longer (1.34 Å) C–N bond length. The C–S bond length is 1.72 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a trigonal planar geometry to one C4+ and two H1+ atoms. Both N–H bond lengths are 1.02 Å. In the second N3- site, N3- is bonded in a trigonal planar geometry to one C4+ and two H1+ atoms. There is one shorter (1.01 Å) and one longer (1.02 Å) N–H bond length. In the third N3- site, N3- is bonded in a trigonal planar geometry to one C4+ and two H1+ atoms. There is one shorter (1.01 Å) and one longer (1.02 Å) N–H bond length. In the fourth N3- site, N3- is bonded in a trigonal planar geometry to one C4+ and two H1+ atoms. Both N–H bond lengths are 1.02 Å. There are eight inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a bent 120 degrees geometry to one Fe2+ and one C4+ atom. In the second S2- site, S2- is bonded in a bent 120 degrees geometry to one Fe2+ and one C4+ atom. Cl1- is bonded in a single-bond geometry to one Fe2+ atom.
DOI: 10.17188/1287584
title: Materials Data on K2TeH6SeO10 by Materials Project

description: K2SeO4.Te(OH)6 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. K1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.78–3.24 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.73 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the third H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.65 Å) H–O bond length. Te6+ is bonded in an octahedral geometry to six O2- atoms. There is four shorter (1.95 Å) and two longer (1.97 Å) Te–O bond length. Se6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.67 Å) and two longer (1.68 Å) Se–O bond length. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one H1+, and one Te6+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+, one H1+, and one Te6+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one H1+, and one Te6+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+, one H1+, and one Se6+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one H1+, and one Se6+ atom.
DOI: 10.17188/1287585
title: Materials Data on ZnH12N3Cl5 by Materials Project

description: Zn(NH4)3Cl5 is Silicon tetrafluoride-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of twelve ammonium molecules, four hydrochloric acid molecules, and four ZnCl4 clusters. In each ZnCl4 cluster, Zn2+ is bonded in a tetrahedral geometry to four Cl1- atoms. There are a spread of Zn–Cl bond distances ranging from 2.27–2.32 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Zn2+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Zn2+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Zn2+ atom.
DOI: 10.17188/1287586
title: Materials Data on BeH4NF3 by Materials Project

description: BeF3NH4 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is zero-dimensional and consists of four ammonium molecules and four BeF3 clusters. In each BeF3 cluster, Be2+ is bonded in a trigonal planar geometry to three F1- atoms. There are a spread of Be–F bond distances ranging from 1.47–1.50 Å. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Be2+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Be2+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Be2+ atom.
DOI: 10.17188/1287587
title: Materials Data on CdHSeNO6 by Materials Project

description: CdHSeO4NO2 crystallizes in the orthorhombic Pbca space group. The structure is two-dimensional and consists of eight nitrous acid molecules and two CdHSeO4 sheets oriented in the (0, 0, 1) direction. In each CdHSeO4 sheet, Cd2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Cd–O bond distances ranging from 2.28–2.91 Å. H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. Se4+ is bonded in a distorted see-saw-like geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.70–2.19 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Cd2+ and one Se4+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Cd2+, one H1+, and one Se4+ atom. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cd2+ and one Se4+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Cd2+ and one Se4+ atom.
DOI: 10.17188/1287588
title: Materials Data on Li3Nd2H6(N3O10)3 by Materials Project

description: Li3Nd2H6(N3O10)3 crystallizes in the cubic P2_13 space group. The structure is three-dimensional. Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.98–2.16 Å. There are two inequivalent Nd3+ sites. In the first Nd3+ site, Nd3+ is bonded in a cuboctahedral geometry to twelve O2- atoms. There are a spread of Nd–O bond distances ranging from 2.62–2.67 Å. In the second Nd3+ site, Nd3+ is bonded in a distorted q6 geometry to twelve O2- atoms. There are a spread of Nd–O bond distances ranging from 2.50–2.75 Å. There are three inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.24–1.30 Å. In the second N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.25–1.29 Å. In the third N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.25–1.29 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Nd3+ and one N5+ atom. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Li1+, one Nd3+, and one N5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Nd3+ and one N5+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Li1+ and one N5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to two Nd3+ and one N5+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one N5+ atom. In the seventh O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two H1+ atoms. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+, one Nd3+, and one N5+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one Nd3+ and one N5+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Nd3+ and one N5+ atom.
DOI: 10.17188/1287589
title: Materials Data on Ti3(BiO3)4 by Materials Project

description: Bi4Ti3O12 is Pb (Zr_0.50 Ti_0.48) O_3-like structured and crystallizes in the monoclinic Pc space group. The structure is three-dimensional. there are three inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedra tilt angles range from 19–28°. There are a spread of Ti–O bond distances ranging from 1.84–2.14 Å. In the second Ti4+ site, Ti4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ti–O bond distances ranging from 1.78–2.38 Å. In the third Ti4+ site, Ti4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ti–O bond distances ranging from 1.78–2.39 Å. There are four inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Bi–O bond distances ranging from 2.29–2.87 Å. In the second Bi3+ site, Bi3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.23–2.69 Å. In the third Bi3+ site, Bi3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.29–2.53 Å. In the fourth Bi3+ site, Bi3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.22–2.58 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Ti4+ and two equivalent Bi3+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ti4+ and two equivalent Bi3+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Ti4+ and one Bi3+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ti4+ and two equivalent Bi3+ atoms. In the fifth O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. In the sixth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two equivalent Bi3+ atoms. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Ti4+ and two equivalent Bi3+ atoms. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ti4+ and two equivalent Bi3+ atoms. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Ti4+ and one Bi3+ atom. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ti4+ and two Bi3+ atoms. In the eleventh O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of edge and corner-sharing OBi4 tetrahedra. In the twelfth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Ti4+ and two equivalent Bi3+ atoms.
DOI: 10.17188/1287590
title: Materials Data on H2C2S3N2(OF)6 by Materials Project

description: (NH)2(CF3)2(SO2)3 crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of eight ammonia molecules, eight fluoroform molecules, and twelve sulfur dioxide molecules.
DOI: 10.17188/1287593
title: Materials Data on BeH14(I2O9)2 by Materials Project

description: BeH14(O9I2)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Be2+ is bonded in a tetrahedral geometry to four O2- atoms. There is one shorter (1.62 Å) and three longer (1.63 Å) Be–O bond length. There are seven inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.69 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.61 Å) H–O bond length. In the third H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.63 Å) H–O bond length. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fifth H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.66 Å) H–O bond length. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to one Be2+ and two equivalent H1+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent I5+ atoms. There are one shorter (1.82 Å) and one longer (2.56 Å) O–I bond lengths. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Be2+ and two H1+ atoms. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent I5+ atoms. There are one shorter (1.82 Å) and one longer (2.67 Å) O–I bond lengths. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to two H1+ and one I5+ atom. The O–I bond length is 1.98 Å. In the sixth O2- site, O2- is bonded in a single-bond geometry to two I5+ atoms. There are one shorter (1.85 Å) and one longer (2.89 Å) O–I bond lengths. In the seventh O2- site, O2- is bonded in a trigonal planar geometry to one Be2+ and two equivalent H1+ atoms. In the eighth O2- site, O2- is bonded in a distorted water-like geometry to three H1+ atoms. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to two H1+ and one I5+ atom. The O–I bond length is 1.83 Å. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to two I5+ atoms. There are one shorter (1.88 Å) and one longer (2.41 Å) O–I bond lengths. There are two inequivalent I5+ sites. In the first I5+ site, I5+ is bonded in a 5-coordinate geometry to four O2- atoms. In the second I5+ site, I5+ is bonded in a 6-coordinate geometry to six O2- atoms.