The Structure of Derivatives of [SCH3Fe(CO)3]2

1971 ◽  
Vol 49 (18) ◽  
pp. 2948-2952 ◽  
Author(s):  
J. P. Crow ◽  
W. R. Cullen
Keyword(s):  
Mössbauer Spectra ◽  
Methyl Group ◽  
Mossbauer Spectra ◽  
Tertiary Phosphines ◽  
Derivatives Of ◽  
Group Configuration

[SCH3Fe(CO)3]2 when separated into its two known isomers reacts with tertiary phosphines with retention of the sulfur-methyl group configuration. The reaction of the mixture of isomers of [SCH3-Fe(CO)3]2 with ditertiary phosphines and arsines has been studied. Some ligands give bridged complexes and others chelates: one ligand gives both. The p.m.r. and Mössbauer spectra of these complexes are discussed.

Diorganotin(IV) derivatives of monothio β-diketones

1980 ◽  
Vol 33 (5) ◽  
pp. 1137 ◽  
Author(s):  
SK Saini ◽  
VD Gupta ◽  
RC Mehrotra ◽  
RP Tripathi
Keyword(s):  
Molecular Weight ◽  
General Formula ◽  
Mössbauer Spectra ◽  
Mossbauer Spectra ◽  
Derivatives Of

Diorganotin(IV) derivatives of monothio β-diketones of the general formula R2Sn(R'CSCHCOR')2 (R = Me, Bu, Ph; R' = Ph, Me; R'' = Ph, p-FC6H4, 2-F,4-OMeC6H3) have been synthesized by the reactions of R2SnCl2 or R2SnO with monothio β-diketones. Complexes of the type, SnX2(R'CSCHCOR')2 (X = Cl, Br, OAc), have also been synthesized. These compounds have been characterized by element analyses as well as by i.r., 1H n.m.r., and Mossbauer spectra. Ebullioscopic molecular weight determinations show them to be monomeric in benzene.

New copper(I) derivatives of organotellurium compounds: Synthesis, vibrational and 125Te Mössbauer spectra

1978 ◽  
Vol 29 ◽  
pp. L217-L220 ◽  
Author(s):  
Ian Davies ◽  
william R. McWhinnie ◽  
Nigel S. Dance ◽  
Colin H.W. Jones
Keyword(s):  
Mössbauer Spectra ◽  
Mossbauer Spectra ◽  
Derivatives Of ◽  
Organotellurium Compounds

The 125Te Mössbauer Absorption Spectra of the Thiourea, Ethylenethiourea, and Tetramethylthiourea Derivatives of Tellurium(II) and Tellurium(IV)

1972 ◽  
Vol 50 (22) ◽  
pp. 3677-3685 ◽  
Author(s):  
B. M. Cheyne ◽  
C. H. W. Jones ◽  
P. Vasudev
Keyword(s):  
Isomer Shift ◽  
Quadrupole Splitting ◽  
Absorption Spectra ◽  
Mössbauer Spectra ◽  
Mossbauer Spectrum ◽  
Mössbauer Spectrum ◽  
Mossbauer Spectra ◽  
Derivatives Of ◽  
Bonding Scheme

The 125Te Mössbauer spectra of a number of Te(II) and Te(IV) complexes of thiourea and related derivatives have been measured. The isomer shifts and quadrupole splittings for several of the compounds are interpreted in terms of a bonding scheme utilizing three-center, two-electron bonds in which the tellurium 5p orbitals participate. The 129I Mössbauer spectrum of trans-TeEtu2129I2 is reported and the isomer shift and quadrupole splitting are shown to be consistent with the proposal that the iodine uses only a 5p orbital in bonding to the tellurium.

Monosubstituted Derivatives of (L–L)Fe2(CO)6 (L–L = fluorocarbon bridged ligand)

1975 ◽  
Vol 53 (15) ◽  
pp. 2232-2239 ◽  
Author(s):  
Lian Sai Chia ◽  
William R. Cullen ◽  
John R. Sams ◽  
James C. Scott
Keyword(s):  
Mössbauer Spectra ◽  
Spectroscopic Studies ◽  
Bidentate Ligands ◽  
Group V ◽  
Mossbauer Spectra ◽  
First Time ◽  
Derivatives Of

The reaction of the ditertiary arsines and phosphines fnfars, fnfos, and fnAsP, (L–L), with Fe(CO)5 at 150° is a superior route to the complexes (L–L)Fe2(CO)6. Two are reported for the first time (L–L = f6fars, f8fars). The complexes react with monodentate and certain potentially bidentate ligands on u.v. irradiation to afford the monosubstituted derivatives L(L–L)Fe2(CO)5 and (L–L)'(L–L)Fe2(CO)5. Spectroscopic studies, in particular magnetically perturbed Mössbauer spectra, indicate that the site of substitution is trans to the FeA—FeB bond and cis to the two group V atoms (on FeA). Disubstitution seems to result in further displacement of CO from either FeA or FeB.

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