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Tertiary phosphine abstraction from a platinum(II) coordination complex with SeCN-: Crystal and molecular structures of Se=PTA and [Se=PTA-Me]I center dot CH3OH

Otto, S; Ionescu, Adriana LU and Roodt, A (2005) In Journal of Organometallic Chemistry 690(19). p.4337-4342
Abstract
Reacting [PtCl(PTA)(3)]Cl (PTA = 1,3,5-triaza-7-phosphatricyclo[3.3.1.1(3,7)]decane) with KSeCN in aqueous or MeOH medium results in the abstraction of the PTA ligands to yield Se = PTA. The reaction also proceeds quantitatively by direct reaction of PTA and KSeCN in water or methanol. The methylated PTA ligand, [PTA-Me]I (1-methyl-1-azonia-3,5-diaza-7-phosphatricyclo[3.3. 1.1(3,7)]decane iodide), reacts accordingly with KSeCN, albeit significantly slower. The crystal structure of Se = PTA, 1, and [Se = PTA-Me]I - CH3OH, 2, revealed P = Se bond distances of 2.0991(19) and 2.100(2) angstrom, respectively. The first order phosphorous selenium coupling constants, (1)J(P-Se) (D2O), of 722 and 788 Hz for Se = PTA and [Se = PTA-Me]I,... (More)
Reacting [PtCl(PTA)(3)]Cl (PTA = 1,3,5-triaza-7-phosphatricyclo[3.3.1.1(3,7)]decane) with KSeCN in aqueous or MeOH medium results in the abstraction of the PTA ligands to yield Se = PTA. The reaction also proceeds quantitatively by direct reaction of PTA and KSeCN in water or methanol. The methylated PTA ligand, [PTA-Me]I (1-methyl-1-azonia-3,5-diaza-7-phosphatricyclo[3.3. 1.1(3,7)]decane iodide), reacts accordingly with KSeCN, albeit significantly slower. The crystal structure of Se = PTA, 1, and [Se = PTA-Me]I - CH3OH, 2, revealed P = Se bond distances of 2.0991(19) and 2.100(2) angstrom, respectively. The first order phosphorous selenium coupling constants, (1)J(P-Se) (D2O), of 722 and 788 Hz for Se = PTA and [Se = PTA-Me]I, respectively, indicates the latter is significantly less electron rich. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
crystal structures, PTA, phosphine selenides
in
Journal of Organometallic Chemistry
volume
690
issue
19
pages
4337 - 4342
publisher
Elsevier
external identifiers
  • wos:000231939900015
  • scopus:24144453429
ISSN
0022-328X
DOI
10.1016/j.jorganchem.2005.07.004
language
English
LU publication?
yes
id
2c5aa2ee-40c7-4ec1-8f38-acbd25ae9ddc (old id 224010)
date added to LUP
2007-10-05 11:43:56
date last changed
2017-07-02 04:21:44
@article{2c5aa2ee-40c7-4ec1-8f38-acbd25ae9ddc,
  abstract     = {Reacting [PtCl(PTA)(3)]Cl (PTA = 1,3,5-triaza-7-phosphatricyclo[3.3.1.1(3,7)]decane) with KSeCN in aqueous or MeOH medium results in the abstraction of the PTA ligands to yield Se = PTA. The reaction also proceeds quantitatively by direct reaction of PTA and KSeCN in water or methanol. The methylated PTA ligand, [PTA-Me]I (1-methyl-1-azonia-3,5-diaza-7-phosphatricyclo[3.3. 1.1(3,7)]decane iodide), reacts accordingly with KSeCN, albeit significantly slower. The crystal structure of Se = PTA, 1, and [Se = PTA-Me]I - CH3OH, 2, revealed P = Se bond distances of 2.0991(19) and 2.100(2) angstrom, respectively. The first order phosphorous selenium coupling constants, (1)J(P-Se) (D2O), of 722 and 788 Hz for Se = PTA and [Se = PTA-Me]I, respectively, indicates the latter is significantly less electron rich.},
  author       = {Otto, S and Ionescu, Adriana and Roodt, A},
  issn         = {0022-328X},
  keyword      = {crystal structures,PTA,phosphine selenides},
  language     = {eng},
  number       = {19},
  pages        = {4337--4342},
  publisher    = {Elsevier},
  series       = {Journal of Organometallic Chemistry},
  title        = {Tertiary phosphine abstraction from a platinum(II) coordination complex with SeCN-: Crystal and molecular structures of Se=PTA and [Se=PTA-Me]I center dot CH3OH},
  url          = {http://dx.doi.org/10.1016/j.jorganchem.2005.07.004},
  volume       = {690},
  year         = {2005},
}