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Sun H, Wu H, Zhang L. Crystal structure of 2-(5-(pyridin-3-yl)-4-(pyridin-4-yl)-4 H-1,2,4-triazol-3-yl)pyridine, C 17H 12N 6. Z KRIST-NEW CRYST ST 2020. [DOI: 10.1515/ncrs-2020-0223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C17H12N6, monoclinic, P21/n (no. 14), a = 5.8617(14) Å, b = 15.845(4) Å, c = 15.326(4) Å, β = 92.650(5)°, V = 1422.0(6) Å3, Z = 4, R
gt(F) = 0.0449, wR
ref(F
2) = 0.1132, T = 296(2) K.
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Affiliation(s)
- Hongtao Sun
- School of Petrochemical Engineering , Shenyang University of Technology , Liaoyang, Liaoning , China
| | - Hao Wu
- School of Chemical Equipment , Shenyang University of Technology , Liaoyang, Liaoning , China
| | - Lili Zhang
- School of Petrochemical Engineering , Shenyang University of Technology , Liaoyang, Liaoning , China
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New Crystal Forms for Biologically Active Compounds. Part 2: Anastrozole as N-Substituted 1,2,4-Triazole in Halogen Bonding and Lp-π Interactions with 1,4-Diiodotetrafluorobenzene. CRYSTALS 2020. [DOI: 10.3390/cryst10050371] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
For an active pharmaceutical ingredient, it is important to stabilize its specific crystal polymorph. If the potential interconversion of various polymorphs is not carefully controlled, it may lead to deterioration of the drug’s physicochemical profile and, ultimately, its therapeutic efficacy. The desired polymorph stabilization can be achieved via co-crystallization with appropriate crystallophoric excipients. In this work, we identified an opportunity for co-crystallization of anastrozole (ASZ), a well-known aromatase inhibitor useful in second-line therapy of estrogen-dependent breast cancer, with a classical XB donor, 1,2,4,5-tetrafluoro-3,6-diiodobenzene (1,4-FIB). In the X-ray structures of ASZ·1.5 (1,4-FIB) co-crystal, different non-covalent interactions involving hydrogen and halogen atoms were detected and studied by quantum chemical calculations and QTAIM analysis at the ωB97XD/DZP-DKH level of theory.
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Zhang L, Gu X, Xue M, Qu C, Ma Y, Chen G. Crystal structure of catena-poly[dichlorido-(μ 2-3-(2-pyridyl)-4-(4-pyridyl)-5-(3-pyridyl)-1,2,4-triazole-κ 2
N: N′)] copper(II), C 17H 12N 6Cl 2Cu. Z KRIST-NEW CRYST ST 2019. [DOI: 10.1515/ncrs-2018-0483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C17H12Cl2CuN6, monoclinic, P21/c (no. 14), a = 13.113(3) Å, b = 7.1325(4) Å, c = 19.527(3) Å, β = 103.628(2)°, V = 1774.8(5) Å3, Z = 4, R
gt(F) = 0.0310, wR
ref(F
2) = 0.0682, T = 296(2) K.
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Affiliation(s)
- Lili Zhang
- School of Petrochemical Engineering , Shenyang University of Technology , Liaoyang 111003 , China
| | - Xuefan Gu
- College of Chemistry and Chemical Engineering, Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields , Xi’an Shiyou University , Xi’an 710065 , China
| | - Ming Xue
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology , Beijing 102206 , China
| | - Chengtun Qu
- College of Chemistry and Chemical Engineering, Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields , Xi’an Shiyou University , Xi’an 710065 , China
| | - Yun Ma
- College of Chemistry and Chemical Engineering, Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields , Xi’an Shiyou University , Xi’an 710065 , China
| | - Gang Chen
- College of Chemistry and Chemical Engineering, Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields , Xi’an Shiyou University , Xi’an 710065 , China
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Dzhardimalieva GI, Uflyand IE. Design and synthesis of coordination polymers with chelated units and their application in nanomaterials science. RSC Adv 2017. [DOI: 10.1039/c7ra05302a] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The advances and problems associated with the preparation, properties and structure of coordination polymers with chelated units are presented and assessed.
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Affiliation(s)
- Gulzhian I. Dzhardimalieva
- Laboratory of Metallopolymers
- The Institute of Problems of Chemical Physics RAS
- Chernogolovka
- 142432 Russian Federation
| | - Igor E. Uflyand
- Department of Chemistry
- Southern Federal University
- Rostov-on-Don
- 344006 Russian Federation
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