A Three‐Dimensional MnII‐[MoIII(CN)7]4– Ferrimagnet Containing Formate as a Second Bridging Ligand. Issue 1 (4th December 2018)

• Record Type: Journal Article
• Authors: Shi, Le; Shao, Dong; Shen, Fu‐Ying; Wei, Xiao‐Qin; Wang, Xin‐Yi
• Is Part Of: Chinese journal of chemistry. Volume 37:Issue 1(2019)
• Page Start: 19
• Page End: 24
• Publication Date: 2018-12-04
• Subjects: crystal engineering -- cyanides -- magnetic properties -- ferrimagnetic ordering -- heptacyanomolybdate -- formate; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201800463
• Languages: English
• ISSNs: 1001-604X

Abstract

Summary of main observation and conclusion: Self‐assembly of the [Mo(CN)7 ] 4– anion and the Mn 2+ ion in the aqueous solution containing ammonium formate results in a new coordination polymer, {(NH4 )3 [(H2 O)Mn3 (HCOO)][Mo(CN)7 ]2 ·4H2 O} n . Single crystal X‐ray analysis revealed a very complicated three‐dimensional (3D) framework, where both the [Mo(CN)7 ] 4– and the formate anions act as bridges between the Mn II centers. Magnetic measurements revealed that this compound displays ferrimagnetic ordering below 70 K. Competing antiferromagnetic interactions between the spin carriers might lead to spin frustration and non‐linear alignment of the magnetic moments. Specifically, this compound is the first mixed [Mo(CN)7 ] 4– /HCOO – bridged molecule magnet. Abstract : The first complex containing both the [Mo(CN)7 ] 4– and the formate as the bridges has been synthesized and characterized. This compound is a ferrimagnet with a critical temperature of 70 K.