Boron‐Oxygen Bond Cleavage of Pinacolborane and Catecholborane Mediated by a Scandium Phosphinidene Complex. Issue 8 (5th June 2014)

• Record Type: Journal Article
• Authors: Wang, Wei; Lv, Yingdong; Gou, Xiaofeng; Leng, Xuebing; Chen, Yaofeng
• Is Part Of: Chinese journal of chemistry. Volume 32:Issue 8(2014:Aug.)
• Page Start: 752
• Page End: 756
• Publication Date: 2014-06-05
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201400150
• Languages: English
• ISSNs: 1001-604X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Reactions of bis‐scandium bridged phosphinidene complex, [LSc(<italic>μ</italic>‐PAr)]₂ (L=MeC(NDIPP)CHC(Me)(N‐CH₂CH₂N(^{<italic>i</italic>}Pr)₂), DIPP=2, 6‐(^{<italic>i</italic>}Pr)₂C₆H₃; Ar=2, 6‐Me₂C₆H₃) (<bold>1</bold>), with pinacolborane, catecholborane, and 9‐borabicyclo[3.3.1]nonane (9‐BBN) are reported. Complex <bold>1</bold> reacts with pinacolborane and catecholborane to give scandium pinacolate (<bold>2</bold>) and catecholate (<bold>3</bold>), showing BO bond cleavage. These two scandium complexes contain an unusual [P(Ar)B(H)P(Ar)]²⁻ dianion, which displays a <italic>μ</italic>‐<italic>η</italic>²:<italic>η</italic>² coordination model. On the other hand, reaction of complex <bold>1</bold> with 9‐BBN affords the BH bond cleavage product, 1, 3‐diphospha‐2, 4‐diboracyclobutane (<bold>4</bold>).</p> </abstract>