Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Cs2CuP2O7, a novel low-density open-framework structure based upon an augmented diamond net. / Mannasova, Alina A.; Chernyatieva, Anastasiya P.; Krivovichev, Sergey V.
в: Zeitschrift fur Kristallographie - Crystalline Materials, Том 231, № 2, 01.02.2016, стр. 65-69.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Cs2CuP2O7, a novel low-density open-framework structure based upon an augmented diamond net
AU - Mannasova, Alina A.
AU - Chernyatieva, Anastasiya P.
AU - Krivovichev, Sergey V.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - The crystal structure of Cs2CuP2O7 [monoclinic, Cc, a=7.460(6), b=12.973(10), c=9.980(8) Å, β=111.95(2)°, V=895.8(12) Å3] prepared by solid-state reactions is based upon open framework formed by corner sharing between CuO4 distorted squares and P2O7 groups. The framework is porous and has a very low framework density of 13.4 Cu+P atoms per 1 nm3. Cs+ cations reside in large framework cavities. The heteropolyhedral network in the title compound is based upon three-dimensional (3;4)-connected net that has a three-membered CuP2 ring as its elementary unit. In terms of reticular chemistry, this net should be considered as an augmented diamond (dia) net. The Cu-P net can be obtained from the latter by the replacement of its nodes by the CuP2 triangles. This replacement is strongly non-centrosymmetric, since all CuP2 triangles are oriented along the same direction, which provides a crystal chemical explanation for the absence of a symmetry centre in the structure. Cs2CuP2O7 is the first compound in the A2CuP2O7 family (A=alkaline metal), which is based upon three-dimensional copper pyrophosphate framework.
AB - The crystal structure of Cs2CuP2O7 [monoclinic, Cc, a=7.460(6), b=12.973(10), c=9.980(8) Å, β=111.95(2)°, V=895.8(12) Å3] prepared by solid-state reactions is based upon open framework formed by corner sharing between CuO4 distorted squares and P2O7 groups. The framework is porous and has a very low framework density of 13.4 Cu+P atoms per 1 nm3. Cs+ cations reside in large framework cavities. The heteropolyhedral network in the title compound is based upon three-dimensional (3;4)-connected net that has a three-membered CuP2 ring as its elementary unit. In terms of reticular chemistry, this net should be considered as an augmented diamond (dia) net. The Cu-P net can be obtained from the latter by the replacement of its nodes by the CuP2 triangles. This replacement is strongly non-centrosymmetric, since all CuP2 triangles are oriented along the same direction, which provides a crystal chemical explanation for the absence of a symmetry centre in the structure. Cs2CuP2O7 is the first compound in the A2CuP2O7 family (A=alkaline metal), which is based upon three-dimensional copper pyrophosphate framework.
KW - copper
KW - crystal structure
KW - diamond net
KW - open framework structure
KW - pyrophosphate
UR - http://www.scopus.com/inward/record.url?scp=84958163046&partnerID=8YFLogxK
U2 - 10.1515/zkri-2015-1894
DO - 10.1515/zkri-2015-1894
M3 - Article
AN - SCOPUS:84958163046
VL - 231
SP - 65
EP - 69
JO - Zeitschrift fur Kristallographie - Crystalline Materials
JF - Zeitschrift fur Kristallographie - Crystalline Materials
SN - 2194-4946
IS - 2
ER -
ID: 9184831