Syntheses and structures of bora-amidinate lanthanide(III) complexes

Dalton Transactions : an International Journal of Inorganic Chemistry
Sjoerd Harder

Abstract

The use and coordination modes of the dianionic bora-amidinate ligand in lanthanide(III) chemistry is explored. Synthetic routes to complexes of the type (DIPP)NBN-LnR (Ln = lanthanide, (DIPP)NBN = HB[N(2,6-iPr(2)-phenyl)](2), R = an amide or benzylide group) have been developed. The reaction of (DIPP)NBN-H(2) with (DMA)(3)Sm (DMA = 2-Me(2)N-benzyl) gave dark-red crystals of (DIPP)NBN-Sm(DMA) in 68% yield. The yttrium analogue, (DIPP)NBN-Y(DMA), was prepared similarly (yellow crystals, 58% yield). The reaction of (DIPP)NBN-Sm(DMA) with (Me(3)Si)(2)NH gave (DIPP)NBN-SmN(SiMe(3))(2).(THF)(2) (yellow crystals, 54% yield). Crystal structure determinations of (DIPP)NBN-Sm(DMA) and (DIPP)NBN-Y(DMA) revealed dimeric complexes that are held together by LnDIPP interactions. The complex (DIPP)NBN-SmN(SiMe(3))(2).(THF)(2) crystallized as a monomer. NMR investigations of [(DIPP)NBN-Y(DMA)](2) in benzene indicate that it is also dimeric in solution. The addition of THF resulted in its dissociation into monomeric units of (DIPP)NBN-Y(DMA).(THF)(x).

References

Mar 7, 2002·Journal of the American Chemical Society·Paul G HayesRobert McDonald
Oct 14, 2003·Inorganic Chemistry·Erik D BradyJohn G Watkin
Feb 17, 2006·Dalton Transactions : an International Journal of Inorganic Chemistry·Sergio BambirraBart Hessen
Apr 1, 2006·Science·Michael S HillRuti Pongtavornpinyo
Apr 26, 2006·Angewandte Chemie·Sjoerd Harder, Julie Brettar
May 29, 2007·Chemical Communications : Chem Comm·Peter C Junk, Marcus L Cole
Nov 10, 2007·Science·Shaun P GreenAndreas Stasch
Nov 6, 2010·Primary Care·Natasha Harder

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Citations

Oct 10, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Billa Prashanth, Sanjay Singh
Dec 1, 2015·Chemical Society Reviews·Tom E Stennett, Sjoerd Harder
Jul 27, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Benjamin FreitagSjoerd Harder
Mar 7, 2012·Chemistry : a European Journal·Holger HeltenIan Manners

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