Polyvalent s- block elements: A missing link challenges the periodic law of chemistry for the heavy elements

Cao, Chang -Su1,2,5; Zhao, Jing1,2; Hu, Han- Shi1,2; Schwarz, W. H. Eugen1,2,3; Li, Jun1,2,4

2023-10-24

10.1073/pnas.2303989120

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA   影响因子和分区

0027-8424

1091-6490

The Periodic Law of Chemistry is one of the great discoveries in cultural history. Elements behaving chemically similar are empirically merged in groups G of a Periodic Table, each element with G valence electrons per neutral atom, and with upper limit G for the oxidation and valence numbers. Here, we report that among the usually mono- or di- valent s -block elements (G = 1 or 2), the heaviest members (87Fr, 88Ra, 119E, and 120E) with atomic numbers Z = 87, 88, 119, 120 form unusual 5- or 6- valent compounds at ambient conditions. Together with well- reported basic changes of valence at the end of the 6d- series, in the whole 7p- series, and for 5g6f- elements, it indicates that at the bottom of common Periodic Tables, the classic Periodic Law is not as straightforward as commonly expected. Specifically, we predict the feasible experimental synthesis of polyvalent [RaL-n] (n = 4, 6) compounds.

relativistic quantum chemistry spin-orbit effects polyvalent metalloids -block chemistry Periodic Table

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英语

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通讯

Xuetang Program of Department of Chemistry, Tsinghua University[22033005] ; National Natural Science Foundation of China[2020B121201002]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001101149100002

NATL ACAD SCIENCES

BIOLOGY & BIOCHEMISTRY ; CLINICAL MEDICINE ; MULTIDISCIPLINARY ; PLANT & ANIMAL SCIENCE ; ENVIRONMENT/ECOLOGY ; SOCIAL SCIENCES, GENERAL ; MICROBIOLOGY ; ECONOMICS BUSINESS ; IMMUNOLOGY ; MATERIALS SCIENCE ; MATHEMATICS ; SPACE SCIENCE ; MOLECULAR BIOLOGY & GENETICS ; PHARMACOLOGY & TOXICOLOGY ; CHEMISTRY ; PSYCHIATRY/PSYCHOLOGY ; NEUROSCIENCE & BEHAVIOR ; PHYSICS ; GEOSCIENCES ; AGRICULTURAL SCIENCES ; ENGINEERING

Web of Science

1.Tsinghua Univ, Theoret Chem Ctr, Dept Chem, Beijing 100084, Peoples R China
2.Tsinghua Univ, Engn Res Ctr Adv Rare Earth Mat, Minist Educ, Beijing 100084, Peoples R China
3.Univ Siegen, Fac Sci & Technol, Dept Chem & Biol, Phys & Theoret Chem Lab, D-57068 Siegen, Germany
4.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
5.ByteDance Res, Beijing 100089, Peoples R China

Cao, Chang -Su,Zhao, Jing,Hu, Han- Shi,et al. Polyvalent s- block elements: A missing link challenges the periodic law of chemistry for the heavy elements[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2023,120(43).

Cao, Chang -Su,Zhao, Jing,Hu, Han- Shi,Schwarz, W. H. Eugen,&Li, Jun.(2023).Polyvalent s- block elements: A missing link challenges the periodic law of chemistry for the heavy elements.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,120(43).

Cao, Chang -Su,et al."Polyvalent s- block elements: A missing link challenges the periodic law of chemistry for the heavy elements".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 120.43(2023).