ADVERTISEMENT
2 /3 FREE ARTICLES LEFT THIS MONTH Remaining
Chemistry matters. Join us to get the news you need.

If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)

ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.

ENJOY UNLIMITED ACCES TO C&EN

Chemical Bonding

Complexes made with many uranium-metal bonds

Multidentate ligands stabilize the unusual molecules

by Sam Lemonick
February 9, 2019 | APPEARED IN VOLUME 97, ISSUE 6

 

09706-scicon11-bimetallic.jpg

Researchers created rare complexes with uranium and nickel atoms that feature multiple uranium-nickel single bonds (Nat. Chem. 2019, DOI: 10.1038/s41557-018-0195-4). Congqing Zhu of Nanjing University and colleagues chelated heptadentate ligands containing nitrogen and phosphorus with uranium atoms. Then they added a nickel reagent, which formed bridges between the uranium-ligand complexes. Uranium chemistry expert Suzanne C. Bart of Purdue University said the researchers drew on decades of research to design the ligands that make these unusual complexes possible. Zhu says the complexes are stabler than the two previously reported compounds with multiple uranium-metal bonds. Two of the group’s complexes contain four U-Ni bonds, and a third has six. The researchers say density functional theory calculations by coauthor Laurent Maron of Paul Sabatier University suggest uranium atoms in two of the complexes have a 5f26d1 electron configuration rather than the expected 5f36d⁰ configuration, a result of the U-Ni bonds’ partly ionic character.

X

Article:

This article has been sent to the following recipient:

Leave A Comment

*Required to comment