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

被引：9

作者：

Chausov, Feodor Feodorovich ^{[1
]}

Lomova, Natalya Valentinovna ^{[1
]}

Dobysheva, Lyudmila Viktorovna ^{[1
]}

Somov, Nikolay Viktorovich ^{[2
]}

Ul'Yanov, Aleksandr Leonidovich ^{[1
]}

Maratkanova, Alyona Nikolaevna ^{[1
]}

Kholzakov, Aleksandr Vladimirovich ^{[1
]}

Kazantseva, Irina Sergeevna ^{[1
]}

机构：

[1] UB RAS, Phys Tech Inst, Udmurt Fed Res Ctr, Ul Tatiany Baramzinoi 34, Izhevsk 426063, Russia

[2] Lobachevsky Natl Res Univ, Fac Phys, 23 Gagarin Av, Nizhnii Novgorod 603950, Russia

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2020年 / 286卷 / 286期

关键词：

Iron(II); Nitrilo-tris(methylenephosphonic) coordination polymers; Dipolar bond; Spin crossover; Anti-corrosive protective coatings; LEVEL MULTIPLET STRUCTURES; METAL CORROSION; CRYSTAL; TRANSITION; STATE; INHIBITION; ENERGIES; MN;

D O I：

10.1016/j.jssc.2020.121324

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Linear structure organic-inorganic coordination polymers [Fe(H2O)(3 mu)-{NH(CH2PO3H)(3)}(n) (Fe NTP H-4) and [Fe7/8Cd1/8(H2O)(3 mu)-{NH(CH2PO3H3}](n) (Fe7/8Cd1/8 NTP H-4) have been synthesized. These polymers are used in anti-corrosive protective coatings for corrosion inhibition of carbon steels. The synthesized compounds have been studied by single-crystal XRD, XPS and Mossbauer spectroscopies. Doping Fe NTP H-4 with cadmium (12.5 at %) followed by the formation of Fe7/8Cd1/8 NTP H-4 induces the spin-state transition of iron ions from their high-spin state( 5)D to their low-spin state S-1, with the covalency of the Fe-O(P) dipolar bond increasing in the backbone polymer chain. This probably provides better protective properties of coatings inhibited by the cadmium complexes of nitrilo-tris(methylenephosphonic acid) as compared to the free acid inhibition.

引用

页数：8

共 30 条

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