Groeger, Christian and Kubicki, Marek M. and Meier, Walter and Pronold, Michael and Wachter, Joachim and Zabel, Manfred (2009) Isomerism and Ligand Rearrangement within the cyclo-P2S3 Middle Deck in Dimolybdenum Triple-Decker Complexes. ORGANOMETALLICS, 28 (19). pp. 5633-5640. ISSN 0276-7333, 1520-6041
Full text not available from this repository. (Request a copy)Abstract
The molecular structure Of [CP*2Mo2P2S3] (1; CP* =eta(5)-C5Me5) has been reinvestigated. In DFT studies a series of various positional isomers A-E have been calculated for the model complex [(C5H5)(2)Mo2P2S3]. The energetically favored isomer [CP*Mo-2(2)(mu,eta(2:2)-PS)(2)(mu-S)] (1B) reacts with W(CO)(5)THF to give [CP*2Mo2P2S3 center dot W(CO)(5)](2). X-ray diffraction analysis of 2 confirms the presence Of two eta(2:2)-PS dumbbells and one singly bridging sulfur ligand, the W(CO)(5) fragment being coordinated at one of the P atoms. Arrangement B is also found in the structure of the diadduct [CP degrees 2Mo2P2S3-{W(CO)(5)}(2)] (3; Cp degrees = t-BUMe2C5H2), which is more stable than its Cp* analogue. P-31 solid-state MAS NMR spectroscopic studies of I and 2 confirm the existence of only one isomer, but reveal disorder phenomena in the solid state within the cyclo-P2S3 middle deck. Addition Of excess W(CO)(5)THF to 1 proceeds via elusive [CP*2MO2P2S3{W(CO)(5)}(2)] to give the cluster [{Cp*2Mo2W(CO)(3)(mu(2),eta(2:2)-ps)- (mu(3),eta(1:1:2)-PS)(mu(3)-S)}{W(CO)(5)}(2)](5). The molecular structure of 5 contains a Mo2WS core with attached PS dumbbells. Contrary to the planar P2S3 central deck in 2 and 3 the PS dumbbells are perpendicular to each other in 5.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ONE-DIMENSIONAL POLYMERS; SOLID-STATE; ELECTRONIC-STRUCTURE; PHOSPHORUS SULFIDES; SHIELDING TENSORS; BUILDING-BLOCKS; PS LIGANDS; CHEMISTRY; NMR; COORDINATION; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Biophysik und physikalische Biochemie Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Arbeitskreis Dr. Joachim Wachter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 03 Sep 2020 08:10 |
| Last Modified: | 03 Sep 2020 08:10 |
| URI: | https://pred.uni-regensburg.de/id/eprint/28277 |
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