Structural and Photophysical Properties of 2,1,3-Benzothiadiazole-Based Phosph(III)azane and Its Complexes

Abstract

Here we describe the synthesis of a novel N,N’-bis(2,1,3-benzothiadiazol-4-yl)-1-phenylphosphanediamine (H2L) and its zinc (II) and copper (I) coordination compounds [Zn2L2]·nC7H8 (1·nC7H8), [Zn2(H2L)2Cl4]·nC7H8 (2·nC7H8), and [Cu(H2L)Cl]n·nTHF (3·THF). According to single crystal X-ray diffraction analysis, H2L ligand and its deprotonated species exhibit different coordination modes. An interesting isomerism is observed for the complexes [Zn2(H2L)2Cl4] (2a and 2b) that differ by the arrangement of H2L. Both complexes possess internal cavities capable of incorporating toluene molecules. Upon toluene release, the geometry of 2b changes substantially, while that of 2a changes slightly. Due to the diverse structures, the compounds 1–3 reveal different photophysical properties. These results are discussed based on previously reported studies and DFT (density functional theory) calculations.

Водорастворимые Октаэдрические Кластерные Комплексы Молибдена

“…В данной работе были получены наночастицы диоксида титана в модификации анатаз по известной методике [3], а также были оптимизированы условия пропитки диоксида с помощью растворов октаэдрических кластерных комплексов молибдена (Bu4N)2[{Mo6I8}(NO3)6] и (Bu4N)2[{Mo6I8}(OTs)6] (OTs --анион пара-толуолсульфоновой кислоты) с разной концентрацией с помощью ультразвуковой обработки. Полученные образцы были исследованы с помощью различных физико-химических методов анализа (РФА, РФЭС, ПЭМ, ЭДРС).…”

“…B, 2016, 4 (36), 5975-5979. [3] A.M. Ruiz, G. Sakai, A. Cornet, K. Shimanoe, J.R. Morante, N. Yamazoe, Sens. Actuators B Chem., 2004, 103 (1-2) Октаэдрические кластерные комплекты вольфрама с бромидными внутренними лигандами изучены в меньшей степени в сравнении с иодидными аналогами, что, вероятно, связано со сложностью их получения, а также с тем, что среди всех вольфрамовых галогенидных кластерных комплексов именно соединение (NBu4)2[{W6I8}I6] имеет максимальный квантовый выход люминесценции (0.39).…”

Molecular Environment Effects That Modulate the Photophysical Properties of Novel 1,3-Phosphinoamines Based on 2,1,3-Benzothiadiazole

“…To date, only a couple of works have been devoted to the synthesis of related thiazole derivatives [17,18]. The corresponding 1,3-aminophosphines based on btd are currently unknown, although we recently reported a number of related btd-based phosph(III)azanes and their non-trivial photophysical properties [19,20].…”

Unexpectedly Long Lifetime of the Excited State of Benzothiadiazole Derivative and Its Adducts with Lewis Acids

“…Further functionalization of the derivatives with donor groups allows one to expand the set of Lewis base centers [ 14 ]. For instance, a number of coordination compounds with btd ligands bearing diphenylphosphine [ 14 , 15 ], pyridyl [ 16 , 17 ], triazolyl and pyrazolyl [ 18 ] groups were synthesized.…”