Linear organic–inorganic heterometallic copolymers [(Fe, Zn)(H2O)3{NH(CH2PO3H)3}]
                                n
                             and [(Fe, Cd)(H2O)3{NH(CH2PO3H)3}]
                                n
                            : The missing link in the mechanism of inhibiting local steel corrosion with phosphonates

Чаусов, Ф. Ф.; Сомов, Н. В.; Закирова, Р. М.; Alalykin, A. A.; Решетников, С. М.; Петров, В. А.; Александров, В. А.; Шумилова, Марина Анатольевна

doi:10.3103/s106287381703008x

Cited by 9 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We consider that interaction of Fe 2+ ions, which are formed under steel corrosion in aqueous media, with Zn and Cd NTP complexes possessing different molecular structures, facilitates the formation of surface layers with different structures and properties. As shown, [20] the interaction of Fe 2+ ions with ZnNTP(N,O) or CdNTP(N,O) complexes involves chemical reactions (1) or (2) followed by the formation of the linear heterometallic organic‐inorganic coordination polymers Fe 1/2 Zn 1/2 NTP or Fe 7/8 Cd 1/8 NTP, respectively. The products of these interactions comprise protective layers on steel surface, the spectra of which (Figure 3, curves H and K) are identical to those of the reference samples Fe 1/2 Zn 1/2 NTP and Fe 7/8 Cd 1/8 NTP (Figure 3, curves I and L, respectively).…”

Section: Resultsmentioning

confidence: 96%

“…The interaction of soluble NTP complexes of Zn or Cd with Fe 2+ ions has been previously shown [20] to lead to the formation of linear heterometallic organic‐inorganic coordination polymers [Fe 1/2 Zn 1/2 (H 2 O) 3 μ‐{NH(CH 2 PO 3 H) 3 }] n ( Fe 1/2 Zn 1/2 NTP ) or [Fe 7/8 Cd 1/8 (H 2 O) 3 μ‐{NH(CH 2 PO 3 H) 3 }] n ( Fe 7/8 Cd 1/8 NTP ), respectively:ffr2>

true^{1} /_{2} n Fe^{2 +} + n [Zn {normalN (CH_{2} PO_{3})_{3}}]^{4 -} + 7 n normalH_{2} normalO = = [Fe_{1 / 2} Zn_{1 / 2} (normalH_{2} normalO)_{3} μ - {NH (CH_{2} PO_{3} H)_{3}}]_{n} +^{1} /_{2} n Zn (OH)_{2} + 3 n OH^{-}

…”

Section: Introductionmentioning

confidence: 94%

“…FeNTP is then isolated and its structure is characterized in detail by the single-crystal XRD (CCDC 1035265). [19] The interaction of soluble NTP complexes of Zn or Cd with Fe 2 + ions has been previously shown [20]…”

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

“…The resulting Fe 1/2 Zn 1/2 NTP and Fe 7/8 Cd 1/8 NTP compounds have been isolated and thoroughly characterized [20] . The single‐crystal XRD analysis has shown that the mentioned compounds have the crystal structure (CCDC 1849911 and 1850041) [20] which is isostructural with FeNTP [19] . Doping the FeNTP polymer structure with the Cd 2+ ions has been shown to cause the spin‐crossover of the Fe atoms from the high‐spin state 5 D(3 s 2 3 p 6 3 d ↑ 5 ↓ 1 ) to the low‐spin state 1 S(3 s 2 3 p 6 3 d ↑ 3 ↓ 3 ).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Zinc and Cadmium Nitrilotris(methylenephosphonate)s: A Comparative Study of Different Coordination Structures for Corrosion Inhibition of Steels in Neutral Aqueous Media

et al. 2020

View full text Add to dashboard Cite

The paper gives a comparative analysis between different coordination structures, determined by single crystal XRD, of Zn and Cd NTP complexes used as corrosion inhibitors for steels in aqueous media according to voltammetry data. The paper provides the results for polymeric O-coordinated complexes and mononuclear N,O-coordinated complexes of both metals. Structural differences between complexes of the same metal which possess different structures (polymeric and mononuclear) lead to their different anti-corrosion activity. Polymeric O-coordinated complexes of both metals exhibit low anti-corrosion activity. N,O-coordinated complexes of Zn and Cd are effective corrosion inhibitors, with Cd complex being four times more effective than Zn complexes.

show abstract

Section: Resultsmentioning

confidence: 96%

true^{1} /_{2} n Fe^{2 +} + n [Zn {normalN (CH_{2} PO_{3})_{3}}]^{4 -} + 7 n normalH_{2} normalO = = [Fe_{1 / 2} Zn_{1 / 2} (normalH_{2} normalO)_{3} μ - {NH (CH_{2} PO_{3} H)_{3}}]_{n} +^{1} /_{2} n Zn (OH)_{2} + 3 n OH^{-}

…”

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Zinc and Cadmium Nitrilotris(methylenephosphonate)s: A Comparative Study of Different Coordination Structures for Corrosion Inhibition of Steels in Neutral Aqueous Media

et al. 2020

View full text Add to dashboard Cite

show abstract

3d‐metal (Cr to Zn) Nitrilotris(Methylenephosphonate)s with different coordination symmetries: Electronic Structure and Chemical Bond

Чаусов

Ломова

Сомов

et al. 2021

Zeitschrift anorg allge chemie

View full text Add to dashboard Cite

In this study, we present a comparative study of two parallel isostructural series of the 3d-metal coordination complexes with nitrilotris(methylenephosphonic acid) H 6 {N(CH 2 PO 3) 3 } (NTP, H 6 L) as a ligand. The series were analyzed by comparing their complexes in the spatial distribution of electron density and electron-energy spectrum extracted from the XRD and XPS data, respectively. The first isostructural series (M=Cr II , Mn II , Fe II , Co II , Ni II , Cu II , Zn II) contains a fourfold (four-times) protonated ligand (H 4 L 2À) and has a slightly distorted octahedral coordination of 3d-metal atom by three O atoms of PO 3 groups and three water molecules. The second isostructural series (M=Mn II , Co II , Cu II , Zn II) with the fully deprotonated ligand (L 6À) has a distorted trigonal-bipyramidal coordination of 3d-metal atom with four O atoms of PO 3 groups and N atom in the vertex. The complex of L 6À with Ni II , which is structurally close to the second series complexes, has a slightly distorted octahedral coordination of Ni atom with four O atoms of PO 3 groups, N atom and an additional water molecule. For fully deprotonated PO 3 groups, considerable shift of electron density is observed away from the center of the phosphorus atom to all the three PÀ O bonds. The protonation of only one of the oxygen atoms causes the shift of electron density from all the three PÀ O bonds to the center of the phosphorus atom and localization of P3s electron pair.

show abstract

Linear organic/inorganic iron(II) coordination polymer based on Nitrilo-tris(Methylenephosphonic acid): Spin crossover induced by Cd doping

Чаусов

Ломова

Добышева

et al. 2020

Journal of Solid State Chemistry

View full text Add to dashboard Cite

Linear organic–inorganic heterometallic copolymers [(Fe, Zn)(H2O)3{NH(CH2PO3H)3}] n and [(Fe, Cd)(H2O)3{NH(CH2PO3H)3}] n : The missing link in the mechanism of inhibiting local steel corrosion with phosphonates

Cited by 9 publications

References 4 publications

Zinc and Cadmium Nitrilotris(methylenephosphonate)s: A Comparative Study of Different Coordination Structures for Corrosion Inhibition of Steels in Neutral Aqueous Media

Zinc and Cadmium Nitrilotris(methylenephosphonate)s: A Comparative Study of Different Coordination Structures for Corrosion Inhibition of Steels in Neutral Aqueous Media

3d‐metal (Cr to Zn) Nitrilotris(Methylenephosphonate)s with different coordination symmetries: Electronic Structure and Chemical Bond

Linear organic/inorganic iron(II) coordination polymer based on Nitrilo-tris(Methylenephosphonic acid): Spin crossover induced by Cd doping

Contact Info

Product

Resources

About