A RE-CORRELATION OF THE VIBRATIONAL SPECTRA AND CRYSTALLOGRAPHIC DATA FOR THE VARIOUS ICE POLYMORPHS

A Cu(II) complex of the amino acid L-selenomethionine of stoichiometry Cu(L-SeMet)2, has been prepared and characterized. Crystallographic data were obtained by means of X-ray powder diffractometry and showed that the compound is isostructural with the related complex of L-methionine, Cu(L-Met)2. The structural analogy is also supported by the analysis of the IR and Raman spectra of the complex, which are briefly discussed in comparison with those of free L-selenomethionine.

Download Full-text

ChemInform Abstract: CRYSTALLOGRAPHIC DATA AND VIBRATIONAL SPECTRA OF SOME TELLURIUM-CONTAINING PEROVSKITES OF THE TYPE A3IIB2IIITEO9

Chemischer Informationsdienst ◽

10.1002/chin.198123038 ◽

1981 ◽

Vol 12 (23) ◽

Author(s):

I. L. BOTTO ◽

E. J. BARAN

Keyword(s):

Vibrational Spectra ◽

Crystallographic Data

Download Full-text

ChemInform Abstract: Crystallographic Data, Vibrational Spectra and Magnetic Properties of the Lanthanoid Digermanates Ln2Ge2O7.

ChemInform ◽

10.1002/chin.199236010 ◽

2010 ◽

Vol 23 (36) ◽

pp. no-no

Author(s):

R. SAEZ-PUCHE ◽

M. BIJKERK ◽

F. FERNANDEZ ◽

E. J. BARAN ◽

I. L. BOTTO

Keyword(s):

Magnetic Properties ◽

Vibrational Spectra ◽

Crystallographic Data

Download Full-text

Crystallographic data, vibrational spectra, and magnetic properties of the two polymorphic forms of Tm2BaNiO5

Journal of Solid State Chemistry ◽

10.1016/0022-4596(92)90289-8 ◽

1992 ◽

Vol 99 (1) ◽

pp. 63-71 ◽

Cited By ~ 17

Author(s):

A. Salinas-Sa´nchez ◽

R. Sa´ez-Puche ◽

F. Ferna´ndez ◽

A. de Andre´s ◽

A.E. Lavat ◽

...

Keyword(s):

Magnetic Properties ◽

Vibrational Spectra ◽

Crystallographic Data ◽

Polymorphic Forms

Download Full-text

Schwingungsspektren und Normalkoordinatenanalyse der Tetrahalogeno-closo-1,2-diphosphahexaborane P2B4X4, X = Cl, Br / Vibrational Spectra and Normal Coordinate Analysis of the Tetrahalogeno-closo-1,2-diphosphahexaboranes P2B4X4, X = Cl, Br

Zeitschrift für Naturforschung B ◽

10.1515/znb-1999-1003 ◽

1999 ◽

Vol 54 (10) ◽

pp. 1229-1234 ◽

Cited By ~ 4

Author(s):

V. Lorenzen ◽

W. Preetz ◽

W. Keller ◽

W. Haubold

Keyword(s):

High Resolution ◽

Vibrational Spectra ◽

Low Temperatures ◽

Normal Coordinate Analysis ◽

Force Constants ◽

Crystallographic Data ◽

Boron Isotopes ◽

Normal Coordinate ◽

Stretching Vibrations ◽

Good Agreement

High resolution vibrational spectra of the tetrahalogeno-closo-1,2-diphosphahexaboranes P2B4X4, X = Cl, Br have been measured at low temperatures (20 - 60 K). The boron-halogen stretching vibrations are observed below 370 cm-1 while the P-P valence vibrations are found at 414 (Cl) and 372 cm-1 (Br). Due to the presence of the boron isotopes 10B and 11B the P-P stretching vibrations and the cage modes in the region of 550 to 1200 cm-1 are split. Based on the crystallographic data of P2B4C14 normal coordinate analyses have been performed. Using a set of 16 force constants (e.g. fd(PP) = 1.35 (X = Cl) and 1.20 (Br), fd(BB) = 1.30 / 1.65 (Cl) and 1.45 /1.60 (Br), fd(BX) = 4.40 (Cl) and 3.53 (Br) mdyn / Å) a good agreement of observed and calculated frequencies has been achieved.

Download Full-text