Photochemical reactions of Re(CO)(5)Br with tetraalkyldiphosphine disulfides (R=Me, Et, Pr-n, Bu-n, Ph) and the crystal structure of [ReBr(CO)(3)(Et2P(S)P(S)Et-2)]


Senturk O. S. , SHEKHEL H., STERENBERG B., UDACHIN K., SERT S., OZDEMIR U., ...Daha Fazla

POLYHEDRON, cilt.22, ss.1659-1664, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 22 Konu: 13
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/s0277-5387(03)00327-9
  • Dergi Adı: POLYHEDRON
  • Sayfa Sayıları: ss.1659-1664

Özet

The hitherto unknown series of complexes fac-[Re(CO)(3)Br{R2P(S)P(S)R-2}] 1a-5a (1a, R = Me; 2a, R = Et; 3a, R = Pr-n; 4a, R = Bu-n; 5a, R = Ph) and [Re-2(CO)(8)Br-2{cis-mu-R2P(S)P(S)R-2}] 1b-5b [1b, R = Me; 2b, R = Et; 3b, R = Pr-n; 4b, R = Bu-n; 5b, R = Ph] have been prepared by the photochemical reaction of Re(CO)(5)Br with R2P(S)P(S)R-2. The complexes have been characterized by elemental analysis, mass spectroscopy (EI), FT-IR and P-31{H-1} NMR spectrometry. The spectroscopic studies suggest cis-chelate bidentate coordination of the ligand in fac-[Re(CO)(3)Br{R2P(S)P(S)R-2}] and cis-bridging bidentate coordination of the ligand between two metals in [Re-2(CO)(8)Br-2{cis-mu-R2P(S)P(S)R-2}] (R = Me, Et, Pr-n, Bu-n, Ph). An X-ray diffraction study of [ReBr(CO)(3)(Et2P(S)P(S)Et-2)] confirms that the rhenium, adopts a distorted octahedral geometry with local C-5 symmetry. (C) 2003 Elsevier Science Ltd. All rights reserved.