Two novel rare earth metal coordination complexes, (EnH2)[YbIII(Egta)(H2O)]2 · 6H2O (I) and [YbIII(Eg3a)(H2O)2] · 6H2O (II), where En = ethylenediamine, H4Egta = ethyleneglycol-bis-(2-aminoethylether)-N,N,N′,N′-tetraacetic acid and H3Eg3a = ethyleneglycol-bis-(2-aminoethylether)-N,N,N′-triacetic acid, have been successfully synthesized through direct heating reflux and natural transformation. Complexes I, II were characterized by single-crystal X-ray diffraction techniques (CIF files CCDC nos. 966211 (I) and 966210 (II)). X-ray diffraction reveals that I is a nine-coordinate structure with a monocapped square antiprism crystallizing in the monoclinic crystal system with P21/c space group. The cell dimensionsare: a = 12.9616(14) Å, b = 12.7134(13) Å, c = 15.0132(15) Å, β = 105.3720(10)° and V = 2385.5(4) Å3. Complex II is also mononuclear nine-coordinate and crystallizes in the monoclinic crystal system with space group P21/c. The cell dimensions are as follows: a = 9.1926(10), b = 10.0046(12), c = 23.536(2) Å, β = 98.9650(10)° and V = 2385.5(4) Å3. However, when I is continued to direct heating reflux, the octadentate Egta ligand losts an acetic acid group and becomes a heptadentate Eg3a ligand. Thus, II was obtained, which was confirmed by means of single crystal X-ray diffraction analysis. This finding may offer a fast and efficient one-step reaction synthesis method of asymmetric aminopolycarboxylic acid.
Russian Journal of Coordination Chemistry – Springer Journals
Published: Apr 9, 2015
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera