BROWSE

Related Researcher

Author's Photo

Rohde, Jan-Uwe
Transition Metal Chemistry
Research Interests
  • Inorganic chemistry, coordination chemistry, organometallic chemistry, chemical synthesis, catalysis, green chemistry, inorganic reaction mechanisms.

ITEM VIEW & DOWNLOAD

Synthesis and spectroscopic characterization of [Rh(SeCN)(6)](3-) and trans-[Rh(CN)(2)(SeCN)(4)](3-), crystal structure of (Me4N)(3)[Rh(SeCN)(6)]

Cited 4 times inthomson ciCited 5 times inthomson ci
Title
Synthesis and spectroscopic characterization of [Rh(SeCN)(6)](3-) and trans-[Rh(CN)(2)(SeCN)(4)](3-), crystal structure of (Me4N)(3)[Rh(SeCN)(6)]
Author
Rohde, Jan-UwePreetz, W
Issue Date
2000-07
Publisher
WILEY-V C H VERLAG GMBH
Citation
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, v.626, no.7, pp.1550 - 1556
Abstract
Treatment of RhCl3 with KSeCN in acetone yields a mixture of selenocyanato-rhodates(III), from which [Rh(SeCN)(6)](3-) and trans-[Rh(CN)(2)(SeCN)(4)](3-) have been isolated by ion exchange chromatography on diethylaminoethyl cellulose. The X-ray structure determination on a single crystal of (Me4N)(3)[Rh(SeCN)(6)] (trigonal, space group R (3) over bar, a = 14.997(2), c = 24.437(3) Angstrom, Z = 6) reveals, that the compound crystallizes isotypically to (Me4N)(3)[Ir(SCN)(6)]. The exclusively via Se coordinated selenocyanato ligands are bonded with the average Rh-Se distance of 2.490 Angstrom and the Rh-Se-C angle of 104.6 degrees. In the low temperature IR and Raman spectra the metal ligand stretching modes nu(RhSe) of (n-Bu4N)(3)[Rh(SeCN)(6)] (1) and trans-(n-Bu4N)(3)[Rh(CN)(2) (SeCN)(4)] (2) are in the range of 170-250 cm(-1). In 2 nu(as)(CRhC) is observed at 479 cm(-1). The vibrational spectra are assigned by normal coordinate analysis based on the molecular parameters of the X-ray determination. The valence force constants are f(d)(RhSe) = 1.08 (1), 1.10 (2) and f(d)(RhC) = 3.14 mdyn/Angstrom (2). f(d)(RhS) = 1.32 mdyn/Angstrom is determined for [Rh(SCN)(6)](3-), which has not been calculated so far. The Rh-103 NMR resonances are 2287 (1), 1680 ppm (2) and the Se-77 NMR resonances are -32.7 (1) and -110.7 ppm (2). The Rh-C bonding of the cyano ligand in 2 is confirmed by a dublett in the C-13 NMR spectrum at 136.3 ppm
URI
https://scholarworks.unist.ac.kr/handle/201301/13266
URL
http://onlinelibrary.wiley.com/doi/10.1002/1521-3749(200007)626:7%3C1550::AID-ZAAC1550%3E3.0.CO;2-R/abstract
DOI
10.1002/1521-3749(200007)626:7<1550::AID-ZAAC1550>3.0.CO;2-R
ISSN
0044-2313
Appears in Collections:
CHM_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU