Materials Data on Sr7Nb34O52 by Materials Project

Sr7Nb34O52 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are seven inequivalent Sr sites. In the first Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with five SrO12 cuboctahedra, corners with two equivalent NbO5 square pyramids, faces with two SrO12 cuboctahedra, faces with two equivalent NbO6 octahedra, and faces with six NbO5 square pyramids. There are a spread of Sr–O bond distances ranging from 2.78–3.15 Å. In the second Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with five SrO12 cuboctahedra, corners with two equivalent NbO5 square pyramids, faces with three SrO12 cuboctahedra, faces with two equivalent NbO6 octahedra, and faces with six NbO5 square pyramids. There are a spread of Sr–O bond distances ranging from 2.82–3.08 Å. In the third Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with three SrO12 cuboctahedra, corners with two equivalent NbO5 square pyramids, faces with four SrO12 cuboctahedra, faces with two equivalent NbO6 octahedra, and faces with six NbO5 square pyramids. There are a spread of Sr–O bond distances ranging from 2.85–2.96 Å. In the fourth Sr site, Sr is bonded to twelve O atoms to form distorted SrO12 cuboctahedra that share corners with five SrO12 cuboctahedra, corners with two equivalent NbO5 square pyramids, faces with three SrO12 cuboctahedra, faces with two equivalent NbO6 octahedra, and faces with six NbO5 square pyramids. There are a spread of Sr–O bond distances ranging from 2.72–3.14 Å. In the fifth Sr site, Sr is bonded to twelve O atoms to form distorted SrO12 cuboctahedra that share corners with three SrO12 cuboctahedra, corners with two equivalent NbO5 square pyramids, faces with four SrO12 cuboctahedra, faces with two equivalent NbO6 octahedra, and faces with six NbO5 square pyramids. There are a spread of Sr–O bond distances ranging from 2.73–3.13 Å. In the sixth Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with five SrO12 cuboctahedra, corners with two equivalent NbO5 square pyramids, faces with four SrO12 cuboctahedra, faces with two equivalent NbO6 octahedra, and faces with six NbO5 square pyramids. There are a spread of Sr–O bond distances ranging from 2.79–3.07 Å. In the seventh Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four SrO12 cuboctahedra, corners with two equivalent NbO5 square pyramids, faces with four SrO12 cuboctahedra, faces with two equivalent NbO6 octahedra, and faces with six NbO5 square pyramids. There are a spread of Sr–O bond distances ranging from 2.79–3.08 Å. There are twenty-one inequivalent Nb sites. In the first Nb site, Nb is bonded to five O atoms to form NbO5 square pyramids that share corners with two SrO12 cuboctahedra, corners with five NbO5 square pyramids, an edgeedge with one NbO5 square pyramid, and a faceface with one SrO12 cuboctahedra. There are a spread of Nb–O bond distances ranging from 2.07–2.16 Å. In the second Nb site, Nb is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.08–2.17 Å. In the third Nb site, Nb is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.09–2.18 Å. In the fourth Nb site, Nb is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.10–2.15 Å. In the fifth Nb site, Nb is bonded in a square co-planar geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.10–2.16 Å. In the sixth Nb site, Nb is bonded to five O atoms to form NbO5 square pyramids that share a cornercorner with one NbO6 octahedra, corners with five NbO5 square pyramids, and faces with three SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 7°. There are a spread of Nb–O bond distances ranging from 2.03–2.15 Å. In the seventh Nb site, Nb is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.08–2.19 Å. In the eighth Nb site, Nb is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.08–2.18 Å. In the ninth Nb site, Nb is bonded to five O atoms to form NbO5 square pyramids that share a cornercorner with one NbO6 octahedra, corners with five NbO5 square pyramids, and faces with three SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 14°. There are a spread of Nb–O bond distances ranging from 2.07–2.17 Å. In the tenth Nb site, Nb is bonded to five O atoms to form NbO5 square pyramids that share corners with two SrO12 cuboctahedra, corners with five NbO5 square pyramids, an edgeedge with one NbO5 square pyramid, and faces with two SrO12 cuboctahedra. There are a spread of Nb–O bond distances ranging from 2.10–2.17 Å. In the eleventh Nb site, Nb is bonded to six O atoms to form NbO6 octahedra that share corners with two equivalent NbO6 octahedra, corners with four NbO5 square pyramids, and faces with seven SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 4–7°. There are a spread of Nb–O bond distances ranging from 1.97–2.11 Å. In the twelfth Nb site, Nb is bonded to five O atoms to form NbO5 square pyramids that share corners with two SrO12 cuboctahedra, corners with five NbO5 square pyramids, an edgeedge with one NbO5 square pyramid, and faces with two SrO12 cuboctahedra. There are a spread of Nb–O bond distances ranging from 2.10–2.17 Å. In the thirteenth Nb site, Nb is bonded to five O atoms to form NbO5 square pyramids that share a cornercorner with one NbO6 octahedra, corners with five NbO5 square pyramids, and faces with four SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 6°. There are a spread of Nb–O bond distances ranging from 2.06–2.14 Å. In the fourteenth Nb site, Nb is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.09–2.17 Å. In the fifteenth Nb site, Nb is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.08–2.16 Å. In the sixteenth Nb site, Nb is bonded to five O atoms to form NbO5 square pyramids that share a cornercorner with one NbO6 octahedra, corners with five NbO5 square pyramids, and faces with four SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 9°. There are a spread of Nb–O bond distances ranging from 2.05–2.15 Å. In the seventeenth Nb site, Nb is bonded in a square co-planar geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.09–2.15 Å. In the eighteenth Nb site, Nb is bonded in a square co-planar geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.10–2.15 Å. In the nineteenth Nb site, Nb is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.07–2.17 Å. In the twentieth Nb site, Nb is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Nb–O bond distances ranging from 2.06–2.17 Å. In the twenty-first Nb site, Nb is bonded to five O atoms to form NbO5 square pyramids that share a cornercorner with one SrO12 cuboctahedra, corners with five NbO5 square pyramids, an edgeedge with one NbO5 square pyramid, and faces with two SrO12 cuboctahedra. There are a spread of Nb–O bond distances ranging from 2.10–2.16 Å. There are thirty-nine inequivalent O sites. In the first O site, O is bonded in a rectangular see-saw-like geometry to four Nb atoms. In the second O site, O is bonded in a rectangular see-saw-like geometry to four Nb atoms. In the third O site, O is bonded in a distorted rectangular see-saw-like geometry to one Sr and three Nb atoms. In the fourth O site, O is bonded in a distorted rectangular see-saw-like geometry to one Sr and three Nb atoms. In the fifth O site, O is bonded in a square co-planar geometry to four Nb atoms. In the sixth O site, O is bonded in a distorted rectangular see-saw-like geometry to one Sr and three Nb atoms. In the seventh O site, O is bonded in a T-shaped geometry to three Nb atoms. In the eighth O site, O is bonded in a rectangular see-saw-like geometry to four Nb atoms. In the ninth O site, O is bonded in a rectangular see-saw-like geometry to four Nb atoms. In the tenth O site, O is bonded in a distorted rectangular see-saw-like geometry to one Sr and three Nb atoms. In the eleventh O site, O is bonded in a square co-planar geometry to four Nb atoms. In the twelfth O site, O is bonded in a square co-planar geometry to four Nb atoms. In the thirteenth O site, O is bonded in a distorted rectangular see-saw-like geometry to one Sr and three Nb atoms. In the fourteenth O site, O is bonded in a distorted rectangular see-saw-like geometry to one Sr and three Nb atoms. In the fifteenth O site, O is bonded to two Sr and three Nb atoms to form a mixture of distorted corner and edge-sharing OSr2Nb3 trigonal bipyramids. In the sixteenth O site, O is bonded to two Sr and three Nb atoms to form distorted OSr2Nb3 trigonal bipyramids that share a cornercorner with one OSr3Nb2 square pyramid, corners with five OSr2Nb3 trigonal bipyramids, and an edgeedge with one OSr2Nb3 trigonal bipyramid. In the seventeenth O site, O is bonded in a distorted see-saw-like geometry to one Sr and three Nb atoms. In the eighteenth O site, O is bonded to two Sr and three Nb atoms to form a mixture of distorted corner and edge-sharing OSr2Nb3 trigonal bipyramids. In the nineteenth O site, O is bonded in a distorted linear geometry to three Sr and two Nb atoms. In the twentieth O site, O is bonded in a distorted rectangular see-saw-like geometry to one Sr and three Nb atoms. In the twenty-first O site, O is bonded in a distorted rectangular see-saw-like geometry to one Sr and three Nb atoms. In the twenty-second O site, O is bonded in a 2-coordinate geometry to three Sr and two Nb atoms. In the twenty-third O site, O is bonded to two Sr and three Nb atoms to form distorted OSr2Nb3 trigonal bipyramids that share a cornercorner with one OSr3Nb2 square pyramid, corners with seven OSr2Nb3 trigonal bipyramids, an edgeedge with one OSr2Nb3 trigonal bipyramid, and a faceface with one OSr2Nb3 trigonal bipyramid. In the twenty-fourth O site, O is bonded to three Sr and two equivalent Nb atoms to form a mixture of distorted corner and edge-sharing OSr3Nb2 square pyramids. In the twenty-fifth O site, O is bonded in a distorted linear geometry to four Sr and two equivalent Nb atoms. In the twenty-sixth O site, O is bonded in a distorted T-shaped geometry to two Sr and three Nb atoms. In the twenty-seventh O site, O is bonded in a distorted linear geometry to four Sr and two Nb atoms. In the twenty-eighth O site, O is bonded in a distorted rectangular see-saw-like geometry to one Sr and three Nb atoms. In the twenty-ninth O site, O is bonded in a distorted rectangular see-saw-like geometry to one Sr and three Nb atoms. In the thirtieth O site, O is bonded in a 2-coordinate geometry to four Sr and two Nb atoms. In the thirty-first O site, O is bonded to two Sr and three Nb atoms to form a mixture of distorted corner and edge-sharing OSr2Nb3 trigonal bipyramids. In the thirty-second O site, O is bonded to two Sr and three Nb atoms to form distorted OSr2Nb3 trigonal bipyramids that share corners with five OSr2Nb3 trigonal bipyramids, an edgeedge with one OSr3Nb2 square pyramid, and edges with two equivalent OSr2Nb3 trigonal bipyramids. In the thirty-third O site, O is bonded to two Sr and three Nb atoms to form distorted OSr2Nb3 trigonal bipyramids that share a cornercorner with one OSr3Nb2 square pyramid, corners with five OSr2Nb3 trigonal bipyramids, edges with two OSr2Nb3 trigonal b

Sr₇Nb₃₄O₅₂晶体属于单斜晶系Cm空间群，其结构为三维骨架。存在7种不等价的Sr原子位点。
在第1个Sr位点中，Sr与12个O原子配位形成SrO₁₂立方八面体（SrO12 cuboctahedra），该多面体通过顶点共享与5个SrO₁₂立方八面体、2个等价的NbO₅四方锥（NbO5 square pyramids）相连，通过面共享与2个SrO₁₂立方八面体、2个等价的NbO₆八面体（NbO6 octahedra）以及6个NbO₅四方锥相连。Sr-O键长分布范围为2.78~3.15 Å。
在第2个Sr位点中，Sr与12个O原子配位形成SrO₁₂立方八面体（SrO12 cuboctahedra），该多面体通过顶点共享与5个SrO₁₂立方八面体、2个等价的NbO₅四方锥相连，通过面共享与3个SrO₁₂立方八面体、2个等价的NbO₆八面体以及6个NbO₅四方锥相连。Sr-O键长分布范围为2.82~3.08 Å。
在第3个Sr位点中，Sr与12个O原子配位形成SrO₁₂立方八面体（SrO12 cuboctahedra），该多面体通过顶点共享与3个SrO₁₂立方八面体、2个等价的NbO₅四方锥相连，通过面共享与4个SrO₁₂立方八面体、2个等价的NbO₆八面体以及6个NbO₅四方锥相连。Sr-O键长分布范围为2.85~2.96 Å。
在第4个Sr位点中，Sr与12个O原子配位形成畸变SrO₁₂立方八面体（distorted SrO12 cuboctahedra），该多面体通过顶点共享与5个SrO₁₂立方八面体、2个等价的NbO₅四方锥相连，通过面共享与3个SrO₁₂立方八面体、2个等价的NbO₆八面体以及6个NbO₅四方锥相连。Sr-O键长分布范围为2.72~3.14 Å。
在第5个Sr位点中，Sr与12个O原子配位形成畸变SrO₁₂立方八面体（distorted SrO12 cuboctahedra），该多面体通过顶点共享与3个SrO₁₂立方八面体、2个等价的NbO₅四方锥相连，通过面共享与4个SrO₁₂立方八面体、2个等价的NbO₆八面体以及6个NbO₅四方锥相连。Sr-O键长分布范围为2.73~3.13 Å。
在第6个Sr位点中，Sr与12个O原子配位形成SrO₁₂立方八面体（SrO12 cuboctahedra），该多面体通过顶点共享与5个SrO₁₂立方八面体、2个等价的NbO₅四方锥相连，通过面共享与4个SrO₁₂立方八面体、2个等价的NbO₆八面体以及6个NbO₅四方锥相连。Sr-O键长分布范围为2.79~3.07 Å。
在第7个Sr位点中，Sr与12个O原子配位形成SrO₁₂立方八面体（SrO12 cuboctahedra），该多面体通过顶点共享与4个SrO₁₂立方八面体、2个等价的NbO₅四方锥相连，通过面共享与4个SrO₁₂立方八面体、2个等价的NbO₆八面体以及6个NbO₅四方锥相连。Sr-O键长分布范围为2.79~3.08 Å。
存在21种不等价的Nb原子位点。
在第1个Nb位点中，Nb与5个O原子配位形成NbO₅四方锥（NbO5 square pyramids），该多面体通过顶点共享与2个SrO₁₂立方八面体、5个NbO₅四方锥相连，与1个NbO₅四方锥共享一条棱，与1个SrO₁₂立方八面体共享一个面。Nb-O键长分布范围为2.07~2.16 Å。
在第2个Nb位点中，Nb以矩形跷跷板状配位几何（rectangular see-saw-like geometry）与4个O原子配位。Nb-O键长分布范围为2.08~2.17 Å。
在第3个Nb位点中，Nb以矩形跷跷板状配位几何与4个O原子配位。Nb-O键长分布范围为2.09~2.18 Å。
在第4个Nb位点中，Nb以矩形跷跷板状配位几何与4个O原子配位。Nb-O键长分布范围为2.10~2.15 Å。
在第5个Nb位点中，Nb以平面正方形配位几何（square co-planar geometry）与4个O原子配位。Nb-O键长分布范围为2.10~2.16 Å。
在第6个Nb位点中，Nb与5个O原子配位形成NbO₅四方锥，该多面体与1个NbO₆八面体共享一个顶点，通过顶点共享与5个NbO₅四方锥相连，通过面共享与3个SrO₁₂立方八面体相连。共享顶点的八面体扭转角（octahedral tilt angles）为7°。Nb-O键长分布范围为2.03~2.15 Å。
在第7个Nb位点中，Nb以矩形跷跷板状配位几何与4个O原子配位。Nb-O键长分布范围为2.08~2.19 Å。
在第8个Nb位点中，Nb以矩形跷跷板状配位几何与4个O原子配位。Nb-O键长分布范围为2.08~2.18 Å。
在第9个Nb位点中，Nb与5个O原子配位形成NbO₅四方锥，该多面体与1个NbO₆八面体共享一个顶点，通过顶点共享与5个NbO₅四方锥相连，通过面共享与3个SrO₁₂立方八面体相连。共享顶点的八面体扭转角为14°。Nb-O键长分布范围为2.07~2.17 Å。
在第10个Nb位点中，Nb与5个O原子配位形成NbO₅四方锥，该多面体通过顶点共享与2个SrO₁₂立方八面体、5个NbO₅四方锥相连，与1个NbO₅四方锥共享一条棱，通过面共享与2个SrO₁₂立方八面体相连。Nb-O键长分布范围为2.10~2.17 Å。
在第11个Nb位点中，Nb与6个O原子配位形成NbO₆八面体，该多面体通过顶点共享与2个等价的NbO₆八面体、4个NbO₅四方锥相连，通过面共享与7个SrO₁₂立方八面体相连。八面体扭转角范围为4°~7°。Nb-O键长分布范围为1.97~2.11 Å。
在第12个Nb位点中，Nb与5个O原子配位形成NbO₅四方锥，该多面体通过顶点共享与2个SrO₁₂立方八面体、5个NbO₅四方锥相连，与1个NbO₅四方锥共享一条棱，通过面共享与2个SrO₁₂立方八面体相连。Nb-O键长分布范围为2.10~2.17 Å。
在第13个Nb位点中，Nb与5个O原子配位形成NbO₅四方锥，该多面体与1个NbO₆八面体共享一个顶点，通过顶点共享与5个NbO₅四方锥相连，通过面共享与4个SrO₁₂立方八面体相连。共享顶点的八面体扭转角为6°。Nb-O键长分布范围为2.06~2.14 Å。
在第14个Nb位点中，Nb以矩形跷跷板状配位几何与4个O原子配位。Nb-O键长分布范围为2.09~2.17 Å。
在第15个Nb位点中，Nb以矩形跷跷板状配位几何与4个O原子配位。Nb-O键长分布范围为2.08~2.16 Å。
在第16个Nb位点中，Nb与5个O原子配位形成NbO₅四方锥，该多面体与1个NbO₆八面体共享一个顶点，通过顶点共享与5个NbO₅四方锥相连，通过面共享与4个SrO₁₂立方八面体相连。共享顶点的八面体扭转角为9°。Nb-O键长分布范围为2.05~2.15 Å。
在第17个Nb位点中，Nb以平面正方形配位几何与4个O原子配位。Nb-O键长分布范围为2.09~2.15 Å。
在第18个Nb位点中，Nb以平面正方形配位几何与4个O原子配位。Nb-O键长分布范围为2.10~2.15 Å。
在第19个Nb位点中，Nb以矩形跷跷板状配位几何与4个O原子配位。Nb-O键长分布范围为2.07~2.17 Å。
在第20个Nb位点中，Nb以矩形跷跷板状配位几何与4个O原子配位。Nb-O键长分布范围为2.06~2.17 Å。
在第21个Nb位点中，Nb与5个O原子配位形成NbO₅四方锥，该多面体与1个SrO₁₂立方八面体共享一个顶点，通过顶点共享与5个NbO₅四方锥相连，与1个NbO₅四方锥共享一条棱，通过面共享与2个SrO₁₂立方八面体相连。Nb-O键长分布范围为2.10~2.16 Å。
存在39种不等价的O原子位点。
在第1个O位点中，O以矩形跷跷板状配位几何与4个Nb原子配位。
在第2个O位点中，O以矩形跷跷板状配位几何与4个Nb原子配位。
在第3个O位点中，O以畸变矩形跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第4个O位点中，O以畸变矩形跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第5个O位点中，O以平面正方形配位几何与4个Nb原子配位。
在第6个O位点中，O以畸变矩形跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第7个O位点中，O以T型配位几何（T-shaped geometry）与3个Nb原子配位。
在第8个O位点中，O以矩形跷跷板状配位几何与4个Nb原子配位。
在第9个O位点中，O以矩形跷跷板状配位几何与4个Nb原子配位。
在第10个O位点中，O以畸变矩形跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第11个O位点中，O以平面正方形配位几何与4个Nb原子配位。
在第12个O位点中，O以平面正方形配位几何与4个Nb原子配位。
在第13个O位点中，O以畸变矩形跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第14个O位点中，O以畸变矩形跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第15个O位点中，O与2个Sr原子和3个Nb原子配位，形成兼具畸变顶点共享和棱共享的OSr₂Nb₃三角双锥（OSr2Nb3 trigonal bipyramids）。
在第16个O位点中，O与2个Sr原子和3个Nb原子配位，形成畸变OSr₂Nb₃三角双锥，该多面体与1个OSr₃Nb₂四方锥（OSr3Nb2 square pyramid）共享一个顶点，通过顶点共享与5个OSr₂Nb₃三角双锥相连，与1个OSr₂Nb₃三角双锥共享一条棱。
在第17个O位点中，O以畸变跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第18个O位点中，O与2个Sr原子和3个Nb原子配位，形成兼具畸变顶点共享和棱共享的OSr₂Nb₃三角双锥。
在第19个O位点中，O以畸变直线型配位几何（distorted linear geometry）与3个Sr原子和2个Nb原子配位。
在第20个O位点中，O以畸变矩形跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第21个O位点中，O以畸变矩形跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第22个O位点中，O以双配位几何（2-coordinate geometry）与3个Sr原子和2个Nb原子配位。
在第23个O位点中，O与2个Sr原子和3个Nb原子配位，形成畸变OSr₂Nb₃三角双锥，该多面体与1个OSr₃Nb₂四方锥共享一个顶点，通过顶点共享与7个OSr₂Nb₃三角双锥相连，与1个OSr₂Nb₃三角双锥共享一条棱，与1个OSr₂Nb₃三角双锥共享一个面。
在第24个O位点中，O与3个Sr原子和2个等价的Nb原子配位，形成兼具畸变顶点共享和棱共享的OSr₃Nb₂四方锥。
在第25个O位点中，O以畸变直线型配位几何与4个Sr原子和2个等价的Nb原子配位。
在第26个O位点中，O以畸变T型配位几何（distorted T-shaped geometry）与2个Sr原子和3个Nb原子配位。
在第27个O位点中，O以畸变直线型配位几何与4个Sr原子和2个Nb原子配位。
在第28个O位点中，O以畸变矩形跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第29个O位点中，O以畸变矩形跷跷板状配位几何与1个Sr原子和3个Nb原子配位。
在第30个O位点中，O以双配位几何与4个Sr原子和2个Nb原子配位。
在第31个O位点中，O与2个Sr原子和3个Nb原子配位，形成兼具畸变顶点共享和棱共享的OSr₂Nb₃三角双锥。
在第32个O位点中，O与2个Sr原子和3个Nb原子配位，形成畸变OSr₂Nb₃三角双锥，该多面体通过顶点共享与5个OSr₂Nb₃三角双锥相连，与1个OSr₃Nb₂四方锥共享一条棱，与2个等价的OSr₂Nb₃三角双锥共享多条棱。
在第33个O位点中，O与2个Sr原子和3个Nb原子配位，形成畸变OSr₂Nb₃三角双锥，该多面体与1个OSr₃Nb₂四方锥共享一个顶点，通过顶点共享与5个OSr₂Nb₃三角双锥相连，与2个OSr₂Nb₃三角双锥共享多条棱，[原文至此截断]