| Title | Crystal structures of two ytterbium(III) complexes comprising alkynylamidinate ligands. |
|---|---|
| Authors | S. Wang; F.M. Sroor; P. Liebing; V. Lorenz; L. Hilfert; F.T. Edelmann |
| Journal | Acta Crystallogr E Crystallogr Commun |
| DOI | 10.1107/S2056989016012135 |
| Abstract |
Two ytterbium(III) complexes comprising alkynylamidinate ligands, namely bis-(?(5)-cyclo-penta-dien-yl)(3-cyclo-propyl-N,N'-diiso-propyl-propynamidinato-?(2)N,N')ytterbium(III), [Yb(C5H5)2(C12H19N2)] or Cp2Yb[( (i) Pr2N)2C-C?C-c-C3H5] (1) and tris-(3-phenyl-N,N'-di-cyclo-hexyl-propynamidinato-?(2)N,N')ytterbium(III), [Yb(C21H27N2)3] or Yb[(CyN)2C-C?C-Ph]3 (Cy = cyclo-hex-yl) (2) have been synthesized and structurally characterized. Both complexes are monomers; for complex 2, the contribution to the scattering from highly disordered toluene solvent molecules in these voids was removed with the SQUEEZE routine [Spek (2015). Acta Cryst. C71, 9-18] in PLATON. The stated crystal data for Mr, ? etc. do not take these into account. |
See more Ytterbium products. Ytterbium (atomic symbol: Yb, atomic number: 70) is a Block F, Group 3, Period 6 element with an atomic weight of 173.054. 
The number of electrons in each of Ytterbium's shells is [2, 8, 18, 32, 8, 2] and its electron configuration is [Xe]4f14 6s2. The Ytterbium atom has a radius of 176 pm and a Van der Waals radius of 242 pm. Ytterbium was discovered by Jean Charles Galissard de Marignac in 1878 and first isolated by Georges Urbain in 1907.
In its elemental form, ytterbium has a silvery-white color. Ytterbium is found in monazite sand as well as the ores euxenite and xenotime. Ytterbium is named after Ytterby, a village in Sweden. Ytterbium can be used as a source for gamma rays, for the doping of stainless steel, or other active metals. Its electrical resistivity rises under stress, making it very useful for stress gauges that measure the deformation of the ground in the even of an earthquake.