Keto, Alkoxy, Ether and Related Complexes

3 Keto, Alkoxy, Ether and Related Complexes - IR bands due to vSi-O-Sr 

IR and Raman spectra of Ti(OTr)4 showed that there was significant coupling between vC-O and VgCOC modes of the ligand and vTiO motions.The Raman spectrum of Ti4(p3-0)2(p2-OTr)2(OTr)8(acac)2 contains VsCOC of the bridging isopropoxides at 833 cm vC-O and in-phase PrCH3 of terminal propoxides were at 1018 and 1171 cm respectively. 

The IR spectrum of acetophenone adsorbed on Ti02 shows that the carbonyl oxygen is initially coordinated to Ti Lewis acidic sites.The complexes CpM(02CNEt2)3, where M = Zr or Hf, give IR bands of bidentate diethyl-carbonato ligands in the range 1540-1318 cm h  

The IR spectra of complexes of DMF with MnCl2, FeCl3, C0CI2, NiCl2 or CUCI2 all show shifts in vC=0 consistent with strong coordination via the carbonyl oxygen. 

Eigand (acac ) modes were assigned for [OsX4(acac)] , where X = C1, Br or I. All were consistent with O, O -chelation. The ligand (acac ) modes in cis- and ran -OsXY(acac)2, where X Y = Cl, Br or I, are approximately independent of the nature of X and Y. A normal coordinate analysis confirms that ligand modes are extensively coupled in Os(acac)3.  

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Keto-, Alkoxy-, Ether and Related Complexes. Raman spectra of (dig-lyme)nLiC104 samples revealed that the Li+ is coordinated by 6 ether oxygens in the solid state (diglyme = Me0(CH2CH20)2Me).389 Similar results were obtained for LiSbF6(diglyme)2.390... 

Keto-, Alkoxy-, Ether and Related Complexes. - Characteristic IR bands due to the NCO2 fragment were seen in the range 1622-1661 cm for Mg6(02CNR2)i2, where R = Et or Ph. ... 

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