التفاصيل البيبلوغرافية
| العنوان: |
A Supramolecular [π-radical] 2 Unit Acts as a Ligand: Coordination of La and Ce by a Pancake-Bonded Pair |
| المؤلفون: |
Michelle B. Mills (11401212), Carolyn A. Michalowicz (11401215), Ellen Song (6017927), Adam C. Maahs (3707836), Julia A. Newman (11401218), Taylr Cawte (11401221), Jessica M. Lovnicki (11401224), Dmitriy V. Soldatov (1671952), Kathryn E. Preuss (1671940) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Medicine, Cell Biology, Physiology, Biotechnology, Mental Health, Computational Biology, Chemical Sciences not elsewhere classified, minor conformational changes, manual mechanochemical methods, low energy barrier, early lanthanide ions, coordinate ligand sphere, two neutral radicals, radical ]< sub, bitadtda , 2 , bonded pair preorganization, supramolecular unit composed, ligand upon coordination, radicals generates, pair dissociates, unit acts, supramolecular unit, paramagnetic ligand, two π, unusual square, structural comparison, readily prepared |
| الوصف: |
Preorganization of a supramolecular unit composed of two π-radicals generates a ligand with an unusual square-shaped tetradentate binding site, ideal for coordination to early lanthanide ions. The supramolecular unit is assembled via a pairwise interaction between two neutral radicals, creating a pancake-bonded diamagnetic [π-radical] 2 dimer. Synthesis and characterization of the new π-radical bitaDTDA (4-(3′-benzisothiazolyl)-1,2,3,5-dithiadiazolyl) is reported. Unlike most DTDA-based ligands in which a supramolecular [π-radical] 2 pair dissociates to generate a bidentate, paramagnetic ligand, the pancake-bonded [bitaDTDA] 2 unit apparently remains intact upon coordination to early lanthanide ions capable of supporting a 10-coordinate ligand sphere. The Ln(hfac) 3 [bitaDTDA] 2 complexes (Ln = La, Ce; hfac = 1,1,1,5,5,5-hexafluoroacetylacetonato) are readily prepared by manual mechanochemical methods, indicating a low energy barrier to coordination. Only minor conformational changes are evident in the supramolecular [bitaDTDA] 2 ligand upon coordination. A structural comparison of the free [bitaDTDA] 2 ligand and Ln(hfac) 3 [bitaDTDA] 2 coordination complexes indicates favorable preorganization of the ligand. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/A_Supramolecular_-radical_sub_2_sub_Unit_Acts_as_a_Ligand_Coordination_of_La_and_Ce_by_a_Pancake-Bonded_Pair/16578453 |
| DOI: |
10.1021/acs.cgd.1c00791.s001 |
| الاتاحة: |
https://doi.org/10.1021/acs.cgd.1c00791.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.BEEDF13 |
| قاعدة البيانات: |
BASE |