Synthesis and EPR studies of a near infrared absorbing tetrakis(2-naphthoxy)vanadylphthalocyanine

Özçeşmeci, İbrahim; Yerli, Yusuf; Okur, Ali İhsan; Gül, Ahmet

doi:10.1016/j.inoche.2009.05.006

Cited by 6 publications

(2 citation statements)

References 21 publications

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“…Vanadium 51 V nuclei have I =7/2 nuclear spin and the interaction of the V IV electron spin with these nuclei results in the appearance of a hyperfine splitting (HFS) of the signal into eight lines or two sets of eight lines when the signal has two components, g II , and g ⊥ . The HFS of the EPR signal of V IV results in a splitting of 9.7–17 mT . The EPR spectra of 3 (at 4.2 and 293 K) and 5 (at 4.2 and 100 K) are shown in Figure a and Figure S10 (in the Supporting Information), and Figure b and Figure S11 (in the Supporting Information), respectively.…”

Section: Resultsmentioning

confidence: 99%

Dianionic Titanyl and Vanadyl (Cation⁺)₂[M^IVO(Pc⁴⁻)]²⁻ Phthalocyanine Salts Containing Pc⁴⁻ Macrocycles

Konarev

Kuzmin

Khasanov

et al. 2018

Chemistry An Asian Journal

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In this study, the titanyl and vanadyl phthalocyanine (Pc) salts (Bu N ) [M O(Pc )] (M=Ti, V) and (Bu MeP ) [M O(Pc )] (M=Ti, V) with [M O(Pc )] dianions were synthesized and characterized. Reduction of M O(Pc ) carried out with an excess of sodium fluorenone ketyl in the presence of Bu N or Bu MeP is exclusive to the phthalocyanine centers, forming Pc species. During reduction, the metal +4 charge did not change, implying that Pc is an non-innocent ligand. The Pc negative charge increase caused the C-N(pyr) bonds to elongate and the C-N(imine) bonds to alternate, thus increasing the distortion of Pc. Jahn-Teller effects are significant in the [eg(π*)] dianion ground state and can additionally distort the Pc macrocycles. Blueshifts of the Soret and Q-bands were observed in the UV/Vis/NIR when M O(Pc ) was reduced to [M O(Pc )] and [M O(Pc )] . From magnetic measurements, [Ti O(Pc )] was found to be diamagnetic and (Bu N ) [V O(Pc )] and (Bu MeP ) [V O(Pc )] were found to have magnetic moments of 1.72-1.78 μ corresponding to an S=1/2 spin state owing to V electron spin. As a result, two latter salts show EPR signals with V hyperfine coupling.

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Section: Resultsmentioning

confidence: 99%

Dianionic Titanyl and Vanadyl (Cation⁺)₂[M^IVO(Pc⁴⁻)]²⁻ Phthalocyanine Salts Containing Pc⁴⁻ Macrocycles

Konarev

Kuzmin

Khasanov

et al. 2018

Chemistry An Asian Journal

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“…An intense absorption arising from the π-π* transition of naphthalene groups appeared for 2 in the UV region at about 286 nm (Fig. 1, Table 1) [12].…”

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Zinc(II)phthalocyanine as an optical window for visible region

Özçeşmeci

Sorar

Gül

2011

Inorganic Chemistry Communications

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Synthesis and electrochemical and in situ spectroelectrochemical characterization of manganese, vanadyl, and cobalt phthalocyanines with 2-naphthoxy substituents

Özçeşmeci

Koca

Gül

2011

Electrochimica Acta

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Synthesis and EPR studies of a near infrared absorbing tetrakis(2-naphthoxy)vanadylphthalocyanine

Cited by 6 publications

References 21 publications

Dianionic Titanyl and Vanadyl (Cation⁺)₂[M^IVO(Pc⁴⁻)]²⁻ Phthalocyanine Salts Containing Pc⁴⁻ Macrocycles

Dianionic Titanyl and Vanadyl (Cation⁺)₂[M^IVO(Pc⁴⁻)]²⁻ Phthalocyanine Salts Containing Pc⁴⁻ Macrocycles

Zinc(II)phthalocyanine as an optical window for visible region

Synthesis and electrochemical and in situ spectroelectrochemical characterization of manganese, vanadyl, and cobalt phthalocyanines with 2-naphthoxy substituents

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Synthesis and EPR studies of a near infrared absorbing tetrakis(2-naphthoxy)vanadylphthalocyanine

Cited by 6 publications

References 21 publications

Dianionic Titanyl and Vanadyl (Cation+)2[MIVO(Pc4−)]2− Phthalocyanine Salts Containing Pc4− Macrocycles

Dianionic Titanyl and Vanadyl (Cation+)2[MIVO(Pc4−)]2− Phthalocyanine Salts Containing Pc4− Macrocycles

Zinc(II)phthalocyanine as an optical window for visible region

Synthesis and electrochemical and in situ spectroelectrochemical characterization of manganese, vanadyl, and cobalt phthalocyanines with 2-naphthoxy substituents

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Product

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Dianionic Titanyl and Vanadyl (Cation⁺)₂[M^IVO(Pc⁴⁻)]²⁻ Phthalocyanine Salts Containing Pc⁴⁻ Macrocycles

Dianionic Titanyl and Vanadyl (Cation⁺)₂[M^IVO(Pc⁴⁻)]²⁻ Phthalocyanine Salts Containing Pc⁴⁻ Macrocycles