Carboxylic acid-tuned nickel(II) clusters: syntheses, structures, solution behaviours and magnetic properties

Su, Yan-Min (author), Ji, Bao-Qian (author), Shao, Feng (author), Zhang, Shan-Shan (author), Jagodič, Marko (author), Jagličić, Zvonko (author), Gao, Zhi-Yong (author), Dou, Jian-Min (author), Sun, Di (author)

Three novel cicada-like nickel(II) clusters, formulated as [Ni6(bdped)2(mba)6(Hdmpz)2(NO3)2(H2O)2]· 4MeCN (SD/Ni6b), [Ni5(bdped)2(tca)6(Hdmpz)(MeOH)2(H2O)]·MeOH (SD/Ni5a) and [Ni4(Hbdped)2- (ba)4(Hdmpz)2]·2NO3·2MeCN (SD/Ni4a), were obtained by tuning the auxiliary carboxylic acids, where H2bdped = 1,2-bis-(3,5-dimethylpyrazol-1-yl)-ethane-1,2-diol; Hmba = 2-methylbenzoic acid; Hdmpz = 3,5-dimethyl-1H-pyrazole; Htca = 3-thiophenecarboxylic acid; and Hba = benzoic acid. The structures of SD/Ni6b, SD/Ni5a and SD/Ni4a are built from a central Ni4O4 opened cube, appending two to zero NiNO5 octahedra. The solution behaviours of SD/Ni6b, SD/Ni5a and SD/Ni4a were studied in detail via an ESI-MS technique and their solution stabilities were confirmed. Magnetic analysis indicated the presence of Ising-type anisotropy: D = −13, −10, and −11 cm−1 for SD/Ni6b, SD/Ni5a, and SD/Ni4a, respectively; moreover, dominantly ferromagnetic interactions were found between magnetic centers: J1 = 6.5 cm−1 , J2 = −0.44 cm−1 and J1 = 5.9 cm−1 , J2 = 2.6 cm−1 for SD/Ni5a and SD/Ni4a, respectively. Besides, the photocurrent signals were observed and they reached the maximum very quickly for these three nickel(II) clusters and then their current intensities remained almost constant, which provide a possibility to be used for light-harvesting and photo-related catalysis.

• Language: English
• Keywords: nickel(II) clusters, structure, magnetic properties
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Year: 2021
• Number of pages: 4355-4362
• Numbering: Vol. 50, iss. 12
• PID: 20.500.12556/RUL-142190
• UDC: 546.742
• ISSN on article: 1477-9234
• DOI: 10.1039/d1dt00165e
• COBISS.SI-ID: 126564099
• Publication date in RUL: 24.10.2022

Record is a part of a journal

• Title: Dalton transactions
• Shortened title: Dalton trans
• Publisher: Royal Society of Chemistry
• ISSN: 1477-9234
• COBISS.SI-ID: 519833113

Secondary language

• Language: Slovenian
• Keywords: Ni(II) kompleks, struktura, magnetne lastnosti

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0348
• Name: Nove slikovno-analitske metode