Manganese(II) Thiocyanate Complexes with Bis(phosphine Oxide) Ligands: Synthesis and Excitation Wavelength-Dependent Multicolor Luminescence

Manganese(II) Thiocyanate Complexes with Bis(phosphine Oxide) Ligands: Synthesis and Excitation Wavelength-Dependent Multicolor Luminescence Full article

Journal

European Journal of Inorganic Chemistry
ISSN: 1434-1948 , E-ISSN: 1099-0682

Output data

Year: 2020, Volume: 2020, Number: 8, Pages: 695-703 Pages count : 9 DOI: 10.1002/ejic.201901213

Tags

Phosphine oxide ligands; Manganese; Thiocyanates; Multicolor luminescence; Excitation dependent emission

Authors

Davydova Maria P. ¹ , Bauer Irina A. ^1,2 , Brel Valery K. ³ , Rakhmanova Mariana I. ^1,2 , Bagryanskaya Irina Yu. ^2,4 , Artem'ev Alexander V. ¹

Affiliations

1	(Данные Web of science) Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, 3 Acad Lavrentiev Ave, Novosibirsk 630090, Russia
2	(Данные Web of science) Novosibirsk State Univ, 2 Pirogova Str, Moscow 119991, Russia
3	(Данные Web of science) Russian Acad Sci, AN Nesmeyanov Inst Organoelement Cpds, 28 Vavilova Str, Moscow 119991, Russia
4	(Данные Web of science) Russian Acad Sci, Siberian Branch, NN Vorozhtsov Novosibirsk Inst Organ Chem, 9 Lavrentiev Ave, Novosibirsk 630090, Russia

First examples of luminescent Mn-II thiocyanate complexes are presented. A series of such compounds has been synthesized via the reaction of Mn(NCS)(2) with bis(phosphine oxides), Ph2P(O)-X-(O)PPh2, where X = CH2 (L1), CH2CH2 (L2), CH2CH2CH2 (L3), CH2C(=CH2)CH2 (L4), C(=CH2)C(=CH2) (L5) and C=C (L6). The L1, L3 and L4 ligands, when reacted with Mn(NCS)(2) on air (EtOH/acetone, r.t.), produce chelate complexes [Mn-II((OO)-O-boolean AND)(2)(NCS)(2)]. Under similar conditions, L5 gives ionic complex [Mn-II(L5)(3)][Mn-II(NCS)(4)], whereas L6 affords chain coordination polymer (CP) [Mn-II(L6)(2)(NCS)(2)](n). By contrast, ligand L2 results in formation of mixed-valent chain CP [(MnMnIII)-Mn-II-(L2)(3)(NCS)(5)](n). Complex [Mn(L4)(2)(NCS)(2)] and CP [Mn(L6)(2)(NCS)(2)] n display unique dual luminescence, i.e. the intraligand fluorescence (blue band) and Mn-II- centered phosphorescence (red band), the ratio of which is largely modulated by excitation wavelength. Through this feature, the luminescence color of these complexes can be smoothly tuned from deep-blue to red. Complex [Mn(L5)(3)][Mn(NCS)(4)] shows Mn-II-based phosphorescence only.

Davydova M.P. , Bauer I.A. , Brel V.K. , Rakhmanova M.I. , Bagryanskaya I.Y. , Artem'ev A.V.
Manganese(II) Thiocyanate Complexes with Bis(phosphine Oxide) Ligands: Synthesis and Excitation Wavelength-Dependent Multicolor Luminescence
European Journal of Inorganic Chemistry. 2020. V.2020. N8. P.695-703. DOI: 10.1002/ejic.201901213 WOS Scopus РИНЦ

Published online:	Feb 18, 2020
Published print:	Feb 28, 2020

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