Long aliphatic chain derivatives of trigonal lanthanide complexes

Abstract

The trigonal lanthanide complexes LnL (H3L = tris(((3-formyl-5-methylsalicylidene)amino)ethyl)amine) contain three pendant aldehyde groups and are known to react with primary amines. Reacting LnL (Ln = Yb, Lu) with 1-octadecylamine yields...

Derivatives of trigonal lanthanide complexes by reaction with long aliphatic chain amines

“…In fact, extended networks of van der Waals interactions are found throughout the crystal structure, with these networks forming large arrays of hydrocarbon stackings (Figure S26). Similar extended networks have been found for YbL 18 [22]. The large amount of van der Waals interactions in the crystal structure is also reflected in the unit cell dimensions.…”

“…Like for the previously studied YbL 18 [22], the differences in the first coordination sphere between the post-derivatised LnL 18 and their parent LnL remain minor. The biggest difference between the postderivatised complexes LnL 18 and their parent complexes LnL is seen in the length of the complexes and the distances to neighbouring Ln centres.…”

“…This is to be expected as the Ln(III) ions shrink in size through the series. The contraction in the bond lengths is even The data for TbL, DyL, HoL and YbL 18 were taken from literature [21,22]. more visible when comparing the aforementioned complexes to YbL 18 .…”

“…This post-derivatisation conserves the number and nature of atoms in the first coordination sphere. We have previously performed studies focusing on the derivatisation of YbL, for example by reacting YbL with benzylamine to obtain complexes suitable for deposition on graphene [21], or by reacting YbL with 1-octadecylamine to form new complexes [22] that have potential in making lanthanidecontaining micelles [23][24][25][26][27][28] and Langmuir-Blodgett film [29][30][31][32].…”

Structural isomerism-tuned magnetisation relaxation dynamics in lanthanide coordination complexes

“…Additionally, we recently investigated how the electronic and molecular structure of a post-functionalisable Yb(trensal) derivative was perturbed by adding three octadecyl chains to the parent complex. 64 Addition of the octadecyl chains resulted in the complex losing its trigonal symmetry. In addition, strong van der Waals interactions were introduced between octadecyl chains, with the crystal packing being dominated by van der Waals mediated hydrocarbon stacking domains.…”