TY - JOUR

T1 - Crystal structure of coordination cobalt(II) and zinc(II) polymers with 1,4-diazabicyclo[2.2.2]octane N,N′-dioxide

AU - Abasheeva, K. D.

AU - Demakov, P. A.

AU - Dybtsev, D. N.

AU - Fedin, V. P.

N1 - Funding Information: The analytical service was supported by project No. 121031700321-3 of the Ministry of Science and Higher Education of the Russian Federation. Funding Information: The work was supported by Russian Scientific Foundation grant No. 22-23-20179, https://rscf.ru/project/22-23-20179/ and the Government of the Novosibirsk Oblast’ (Agreement No. p-22). Publisher Copyright: © 2022, Pleiades Publishing, Ltd.

PY - 2022/8

Y1 - 2022/8

N2 - Four cobalt(II) and zinc(II) cationic metal-organic frameworks (MOFs) based on bridging 1,4-diazabicyclo[2.2.2]octane N,N′-dioxide (odabco) are synthesized. In a mixture of N,N-dimethyl formamide (DMF) and water acidified with nitric acid, [Co(odabco)3](NO3)2 compound (I) is obtained. The synthesis in a mixture of dimethyl acetamide (DMA), acetic acid, and water results in the formation of [Co2(odabco)3(OAc)2](NO3)2 (II, OAc–- acetate) MOF containing coordinated acetate anions. In DMF acidified with hydrochloric acid, [Zn2(odabco)3Cl2](NO3)2·DMF·2H2O, compound (III) containing coordinated chloride anions is obtained. In a mixture of DMA and water acidified with nitric acid, [Zn(odabco)2](NO3)2(Hodabco)NO3·0.83H2O MOF (IV) is synthesized. The structures of I-IV are determined by single crystal X-ray diffraction. In all structures, odabco acts as a bridging ligand forming cationic layered (II, III) or 3D (I, IV) coordination lattices and protonated guest chains {–Hodabco+–}n in IV. The cavities in the lattices of I-IV have total solvent-accessible volumes of 10%, 11%, 28%, and 56% respectively and accomodate (Formula presented.) counterions. Compounds I and II are the first examples of coordination polymers based on Co2+ and the odabco ligand. The influence of the synthetic conditions of I-IV on their structure is analyzed in comparison to each other and the previously published examples of structures with this ligand.

AB - Four cobalt(II) and zinc(II) cationic metal-organic frameworks (MOFs) based on bridging 1,4-diazabicyclo[2.2.2]octane N,N′-dioxide (odabco) are synthesized. In a mixture of N,N-dimethyl formamide (DMF) and water acidified with nitric acid, [Co(odabco)3](NO3)2 compound (I) is obtained. The synthesis in a mixture of dimethyl acetamide (DMA), acetic acid, and water results in the formation of [Co2(odabco)3(OAc)2](NO3)2 (II, OAc–- acetate) MOF containing coordinated acetate anions. In DMF acidified with hydrochloric acid, [Zn2(odabco)3Cl2](NO3)2·DMF·2H2O, compound (III) containing coordinated chloride anions is obtained. In a mixture of DMA and water acidified with nitric acid, [Zn(odabco)2](NO3)2(Hodabco)NO3·0.83H2O MOF (IV) is synthesized. The structures of I-IV are determined by single crystal X-ray diffraction. In all structures, odabco acts as a bridging ligand forming cationic layered (II, III) or 3D (I, IV) coordination lattices and protonated guest chains {–Hodabco+–}n in IV. The cavities in the lattices of I-IV have total solvent-accessible volumes of 10%, 11%, 28%, and 56% respectively and accomodate (Formula presented.) counterions. Compounds I and II are the first examples of coordination polymers based on Co2+ and the odabco ligand. The influence of the synthetic conditions of I-IV on their structure is analyzed in comparison to each other and the previously published examples of structures with this ligand.

KW - cobalt(II) complexes

KW - metal-organic frameworks

KW - N-oxides

KW - porous lattices

KW - single crystal X-ray diffraction

KW - synthesis

KW - zinc(II) complexes

UR - http://www.scopus.com/inward/record.url?scp=85137515632&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/180af529-fbf8-3972-b6ea-3abe7c0b8829/

U2 - 10.1134/S0022476622080169

DO - 10.1134/S0022476622080169

M3 - Article

AN - SCOPUS:85137515632

VL - 63

SP - 1349

EP - 1357

JO - Journal of Structural Chemistry

JF - Journal of Structural Chemistry

SN - 0022-4766

IS - 8

ER -