TY - JOUR

T1 - Structures and thermal properties of silver(i) β-diketonates with bulky terminal substituents

AU - Gulyaev, S. A.

AU - Vikulova, E. S.

AU - Sukhikh, T. S.

AU - Ilyin, I. Yu

AU - Morozova, N. B.

N1 - Funding Information: The work was supported by grant MK-6148.2021.1.3 of the President of the Russian Federation for young scientists–candidates of science. Publisher Copyright: © 2021, Pleiades Publishing, Ltd.

PY - 2021/12

Y1 - 2021/12

N2 - Silver β-diketonates [Ag(RC(O)CHC(O)R′)]∞ with bulky terminal substituents are synthesized and characterized: R = C(OCH3)(CH3)2, R′ = CF3 (1), R = R′ = C(CH3)3 (2). Complex 1 is obtained for the first time. Structures of compounds are determined by single crystal X-ray diffraction. For complex 1 the crystallographic data are: space group P1, a = 5.8012(6) Å, b = 9.1717(10) Å, c = 9.9251(11) Å, α = 73.722(4)°, β = 78.377(4)°, γ = 87.336(4)°, V = 496.49(9) Å3, Z = 2, dcalc = 2.134 g/cm3, μ = 2.059 mm–1; for complex 2: space group C2, a = 22.1700(6) Å, b = 5.84530(10) Å, c = 9.3249(2) Å, β = 104.9670(10)°, V = 1167.42(5) Å3, Z = 4, dcalc = 1.656 g/cm3, μ = 1.701 mm–1. Both compounds are chain coordination polymers. Anions are coordinated in a bidentate-cyclic fashion. One of carbonyl oxygen atoms and the carbon atom in the CH-group perform the bridging function. In complex 2, the coordination environment of silver is a distorted vacant trigonal bipyramid (CN = 4). In complex 1, it is a tetragonal pyramid due to the additional coordination of the methoxy oxygen atom of the neighboring anion (CN = 5). The structure and thermal stability of the synthesized complexes are compared with those of the closest analogue (R = C(CH3)3, R′ = CF3), which allowed us to reveal the effect of terminal substituents in the β-diketonate ligand.

AB - Silver β-diketonates [Ag(RC(O)CHC(O)R′)]∞ with bulky terminal substituents are synthesized and characterized: R = C(OCH3)(CH3)2, R′ = CF3 (1), R = R′ = C(CH3)3 (2). Complex 1 is obtained for the first time. Structures of compounds are determined by single crystal X-ray diffraction. For complex 1 the crystallographic data are: space group P1, a = 5.8012(6) Å, b = 9.1717(10) Å, c = 9.9251(11) Å, α = 73.722(4)°, β = 78.377(4)°, γ = 87.336(4)°, V = 496.49(9) Å3, Z = 2, dcalc = 2.134 g/cm3, μ = 2.059 mm–1; for complex 2: space group C2, a = 22.1700(6) Å, b = 5.84530(10) Å, c = 9.3249(2) Å, β = 104.9670(10)°, V = 1167.42(5) Å3, Z = 4, dcalc = 1.656 g/cm3, μ = 1.701 mm–1. Both compounds are chain coordination polymers. Anions are coordinated in a bidentate-cyclic fashion. One of carbonyl oxygen atoms and the carbon atom in the CH-group perform the bridging function. In complex 2, the coordination environment of silver is a distorted vacant trigonal bipyramid (CN = 4). In complex 1, it is a tetragonal pyramid due to the additional coordination of the methoxy oxygen atom of the neighboring anion (CN = 5). The structure and thermal stability of the synthesized complexes are compared with those of the closest analogue (R = C(CH3)3, R′ = CF3), which allowed us to reveal the effect of terminal substituents in the β-diketonate ligand.

KW - coordination polymer

KW - silver

KW - single crystal X-ray diffraction analysis

KW - thermal analysis

KW - β-diketonate

UR - http://www.scopus.com/inward/record.url?scp=85121725138&partnerID=8YFLogxK

UR - https://www.elibrary.ru/item.asp?id=47547534

UR - https://www.mendeley.com/catalogue/58c8d731-7697-33bc-9ce2-cb14a5ea34db/

U2 - 10.1134/S0022476621120039

DO - 10.1134/S0022476621120039

M3 - Article

AN - SCOPUS:85121725138

VL - 62

SP - 1836

EP - 1845

JO - Journal of Structural Chemistry

JF - Journal of Structural Chemistry

SN - 0022-4766

IS - 12

M1 - 3

ER -