Ligand substitution equilibrium in the macrocyclic molybdenum(V) complex

Tipugina, M. Yu.; Моторина, Е. В.; Ломова, Т. Н.

doi:10.1134/s0036023607030175

Cited by 8 publications

(10 citation statements)

References 4 publications

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“…With regard to the equilibrium constant of the reaction of displacement of a single-charged acido ligand to the second coordination sphere, the complexes (AcO)CrTPP [19], O=W(OH)TPP [17], and O=Mo(OH)TPP can be arranged in the following series:…”

Section: Resultsmentioning

confidence: 99%

Thermodynamics and Kinetics of Reaction of (Oxo)(hydroxo)molybdenumtetraphenylporphyrin with Pyridine

2005

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The reaction of meso -tetraphenylporphyrin with Mo(VI) oxide in boiling phenol resulted in a stable complex O=Mo(OH)TPP. Thermodynamics and kinetics of the reaction between (oxo)(hydroxo)molybdenumtetraphenyporphyrin with pyridine in toluene were studied by spectrophotometric method. This reaction was found to occur in three equilibrium elementary stages: replacement of OHby Py ( K 1 = 9.1 × 10 3 l/mol, k 1 = 5.25 s -1 mol -1 l), the formation of dication (dipyridine)(hydroxo)molybdenumtetraphenylporphyrin as a result of cleavage of a double bond Mo=O ( K 2 = 39.3 l/mol, k 2 = 1.83 × 10 -2 s -1 mol -1 l), and the formation of cationic complex [ Mo ( Py ) 3 TPP ] 3+ · 3 OH -( K 3 = 1.0 l/mol, k 3 = 1.19 × 10 -3 s -1 mol -1 l).

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Section: Resultsmentioning

confidence: 99%

Thermodynamics and Kinetics of Reaction of (Oxo)(hydroxo)molybdenumtetraphenylporphyrin with Pyridine

2005

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“…The possible step two-way reactions between MPXs and heterocyclic bases were established according to spectral and thermodynamic data. [12,[64][65][66][67][68][69][70][71][72][73][74][75][76][77] The reactions including from one to three stages are shown together with the S2. Transition of an axial anionic group to the second coordination sphere is most often observed during bonding the second heterocyclic molecule.…”

Section: The Axial Substitution Through the Step Equilibriamentioning

confidence: 99%

“…π complex supposed in the work. [89] The acetate ligand in the first coordination sphere is reliably established by IR spectroscopy, namely, by the relative position of the O-C-O symmetric and asymmetric vibration frequencies of 1385 and 1617 cm −1 , indicating bidentate bonding of acetate ligand in the reaction product. [90]…”

Section: The Substitution With the Formation Of Dimeric Porphyrinmentioning

confidence: 99%

Recent progress in organometallic porphyrin‐based molecular materials for optical sensing, light conversion, and magnetic cooling

Ломова

2021

Applied Organom Chemis

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We present the review of fundamental parameters and properties of metalloporphyrins/phthalocyanines with axial covalent M-O/M-N bonds (M is a metal atom in the oxidation degree more than 2+) for use in the development of the chemistry of molecular materials. The porphyrin complexes covalently bonded along the axial axis are differed by the high oxidation state of a metal atom and related heightened axial reactivity compared with the corresponding derivatives of two charged metal cations, applications of which in both scientific studies and practical areas are most widely reflected in publications. The selection of chemical structures of the 3d, 4d, 5d, and 4f metal derivatives of porphyrins/phthalocyanines and study of their properties promising in the detection of bioactive organic bases, optoelectronics (active components of allsmall molecular organic solar cells), and spintronics (room-temperature magnetocaloric materials) are detailed in the article. The results of the first critical analysis of this topic in the review and the insight into chemical structure effects in the function of MPXs/MPcXs as molecular materials will contribute to further development of their organometallic chemistry.

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“…В ИК спектре продукта реакции обнаружены новые сигналы с частотами колебаний координированного Py 3 F -1426, 1190, 527 (колебания, относящиеся к фуллереновому каркасу С 60 ), [30] 1307(C=N пиридинового кольца), [31] 1122 и 995 (С-N пирролидинового кольца), [32] 481 (Мо-N) [39] , отсутствующие в спектре исходного комплекса. Благодаря наличию опубликованных в литературе [38,[40][41][42][43] данных по изучению реакций O=Mo(OH)TPP с другими аналогичными основаниями и основания Py 3 F с другими металлопорфиринами, можно провести анализ связи закономерностей образования донорно-акцепторных комплексов со структурой взаимодействующих молекул:…”

Section: таблицаunclassified