Research output: Contribution to journal › Article › peer-review
Complexation of Cobalt(II), Nickel(II), Copper(II), and Zinc(II) Hexafluorosilicates with Nicotinamide in Aqueous Solution. / Cherkasova, T. G.; Pervukhina, N. V.; Kuratieva, N. V. et al.
In: Russian Journal of Inorganic Chemistry, Vol. 64, No. 9, 01.09.2019, p. 1120-1126.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Complexation of Cobalt(II), Nickel(II), Copper(II), and Zinc(II) Hexafluorosilicates with Nicotinamide in Aqueous Solution
AU - Cherkasova, T. G.
AU - Pervukhina, N. V.
AU - Kuratieva, N. V.
AU - Sannikova, V. A.
AU - Tatarinova, E. S.
AU - Cherkasova, E. V.
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Abstract: The new complexes [M(NA)2(H2O)4]SiF6 ⋅ 2H2O, where M2+ = Co, Ni, Zn (complexes I, II, and III, respectively), and NA = C6H6N2O is nicotinamide, [Cu(NA)2(SiF6)(H2O)2] ⋅ 2H2O (IV), and (HNA)2SiF6 (V) have been synthesized from aqueous solutions and studied by chemical, IR spectroscopic, and X-ray diffraction analyses. Their unit cell parameters are a = 16.2448(18) Å, b = 6.8834(8) Å, c = 10.0767(11) Å, β = 102.765(3)°, V = 1098.92 Å3, space group C2 for I; a = 16.1591(7) Å, b = 6.8777(3) Å, c = 10.0314(5) Å, β = 102.410(1)°, V = 1088.82 Å3, space group C2 for II; a = 16.2265(6) Å, b = 6.8965(3) Å, c = 10.0696(5) Å, β = 102.390(1)°, V = 1100.60 Å3, space group C2 for III; a = 6.5915(4) Å, b = 7.7670(4) Å, c = 10.1506(5) Å, α = 110.7390(10)°, β = 105.824(2)°, γ = 95.448(2)°, V = 456.868 Å3, space group( Formula Presented) IV; and a = 14.1904(7) Å, b = 9.0468(4) Å, c = 11.8160(7) Å, β = 106.277(2)°, V = 1456.1 Å3, space group C2/c for V. Complexes I–III are isostructural and represent ionic compounds formed by hexafluorosilicate anions and complex cations. The coordination polyhedron of the metal is a slightly distorted octahedron built of the O atoms of four coordinated water molecules and the two N atoms of two pyridine rings of two nicotinamide molecules in trans positions of the polyhedron. Complex IV has a polymeric chain structure. The coordination polyhedron of the copper cation represents an octahedron, which is elongated along its axis and built of the two N atoms of two pyridine rings of two nicotinamide molecules, the two O atoms of coordinated water molecules, and the two F atoms of hexafluorosilicate anions acting as bridges between neighboring cations. In the structure of complex V, the nitrogen atom of the pyridine ring HNA+ is protonated. The geometry of hexafluorosilicate anions is identical in all the five complexes. The structures have branched networks of hydrogen bonds.
AB - Abstract: The new complexes [M(NA)2(H2O)4]SiF6 ⋅ 2H2O, where M2+ = Co, Ni, Zn (complexes I, II, and III, respectively), and NA = C6H6N2O is nicotinamide, [Cu(NA)2(SiF6)(H2O)2] ⋅ 2H2O (IV), and (HNA)2SiF6 (V) have been synthesized from aqueous solutions and studied by chemical, IR spectroscopic, and X-ray diffraction analyses. Their unit cell parameters are a = 16.2448(18) Å, b = 6.8834(8) Å, c = 10.0767(11) Å, β = 102.765(3)°, V = 1098.92 Å3, space group C2 for I; a = 16.1591(7) Å, b = 6.8777(3) Å, c = 10.0314(5) Å, β = 102.410(1)°, V = 1088.82 Å3, space group C2 for II; a = 16.2265(6) Å, b = 6.8965(3) Å, c = 10.0696(5) Å, β = 102.390(1)°, V = 1100.60 Å3, space group C2 for III; a = 6.5915(4) Å, b = 7.7670(4) Å, c = 10.1506(5) Å, α = 110.7390(10)°, β = 105.824(2)°, γ = 95.448(2)°, V = 456.868 Å3, space group( Formula Presented) IV; and a = 14.1904(7) Å, b = 9.0468(4) Å, c = 11.8160(7) Å, β = 106.277(2)°, V = 1456.1 Å3, space group C2/c for V. Complexes I–III are isostructural and represent ionic compounds formed by hexafluorosilicate anions and complex cations. The coordination polyhedron of the metal is a slightly distorted octahedron built of the O atoms of four coordinated water molecules and the two N atoms of two pyridine rings of two nicotinamide molecules in trans positions of the polyhedron. Complex IV has a polymeric chain structure. The coordination polyhedron of the copper cation represents an octahedron, which is elongated along its axis and built of the two N atoms of two pyridine rings of two nicotinamide molecules, the two O atoms of coordinated water molecules, and the two F atoms of hexafluorosilicate anions acting as bridges between neighboring cations. In the structure of complex V, the nitrogen atom of the pyridine ring HNA+ is protonated. The geometry of hexafluorosilicate anions is identical in all the five complexes. The structures have branched networks of hydrogen bonds.
KW - 3-pyridiniumcarboxamide cation
KW - cobalt(II)
KW - complex compounds
KW - copper(II)
KW - hexafluorosilicate anion
KW - IR spectroscopy
KW - nickel(II) zinc(II)
KW - nicotinamide
KW - X-ray diffraction analysis
KW - ISONICOTINAMIDE
KW - CD(II)
KW - ACIDS
KW - CRYSTAL-STRUCTURE
KW - CU(II)
KW - ZN(II)
KW - METHYLNICOTINAMIDE
KW - CO(II)
KW - NI(II)
UR - http://www.scopus.com/inward/record.url?scp=85073444954&partnerID=8YFLogxK
U2 - 10.1134/S0036023619090055
DO - 10.1134/S0036023619090055
M3 - Article
AN - SCOPUS:85073444954
VL - 64
SP - 1120
EP - 1126
JO - Russian Journal of Inorganic Chemistry
JF - Russian Journal of Inorganic Chemistry
SN - 0036-0236
IS - 9
ER -
ID: 21937307