Organic derivatives of tin

Gaur, D. P.; Srivastava, G.; Mehrotra, R. C.

doi:10.1016/s0022-328x(00)92844-4

Cited by 12 publications

(3 citation statements)

References 8 publications

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“…The i^(Sn-C)(methyl) bands are found at 570 -510 cm" 1 in methyltin complexes of N-salicylidines of aroylhydrazines [28], at 541 -518 cm" 1 in Me2Sn(SMe)2 [29], at 578 -570 cm" 1 in Me2Sn(acac)2 [30] and at 537 -527 cm-1 in MeSnCl3(H2Acen) [26]. In glycolates of mono-rcbutyltin, i'(Sn-CXbutyl) modes are found at 615 -540 cm-1 [31]. We have found bands at 365 cm-1 for the z/(Sn-C)(phenyl) mode in compound 1, and at 534 and 571 cm-1 for the i/(Sn-C)(alkyl) modes [alkyl = «-butyl, methyl] in compounds 2 and 3 re spectively (Table II).…”

Section: Infrared Spectramentioning

confidence: 92%

“…In organotin(IV) adducts and chelate complexes of Schiff bases u(Sn-N) modes appear at 413 -315 cm-1 [16], but in dimethyltin(IV) complexes of N-salicylidine derivatives of aroylhydrazines these are found at 435 ± 5 cm" 1 [28], Thus we have assigned ^(Sn-N) modes in the range 499 -459 cm-1 . The v(S n -0 ) modes are re ported to be at 613 -515 cm-1 for different organ- otin(IV) complexes of Schiff bases [16] and at 500 ± 1 0 cm-1 for some methyltin(IV) complexes [28], In the glycolates of mono-/i-butyltin(IV) the u(Sn-O) band appears around at 650 cm-1 [31], whereas Russo et al reported u (S n -0 ) band at 469 -464 cm-1 [32]. Therefore, the is(Sn-O) modes for the diorganotin(IV) complexes 1 -3 are assigned at 557-544 cm -' (T able II).…”

Section: Infrared Spectramentioning

confidence: 99%

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Synthesis, Spectroscopy and Structure of Diorganotin(IV) Schiff Base Complexes

Dey

Das

Nöth

1999

Zeitschrift Für Naturforschung B

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Three diorganotin(IV) chelates with a tetradentate Schiff base, H2Vanophen, [FLVanophen = N,] of the type R2Sn(Vanophen) (R = Ph: 1; R = rt-Bu: 2; R = Me: 3) have been synthesized by the reaction of R2SnCl2 (R = Ph, n-Bu, Me) and FLVanophen in the presence of triethylamine in benzene. The complexes have been characterised by IR and NMR spectroscopy and by elemental analysis. The <$(' l9Sn) values for the complexes 1 -3 are -543.0, -414.2 and -398.2 ppm respectively, indicating hexacoordinated Sn centers. These have been ascertained by X-ray crystal structure determinations of 1 and 3. The distances between tin and the two axial carbon atoms in each complex differ not significantly [2.17(1) Ä in 1, and 2.100(3) and 2.115(3) A in 3). The C-Sn-C angles for 1 and 3 are 165.9(4)° and 159.96(9)°, respectively. The solution NMR spectra ('H , l3C, 1|ySn) show clearly that the solid state structures are retained in solution.

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Section: Infrared Spectramentioning

confidence: 92%

Section: Infrared Spectramentioning

confidence: 99%

Synthesis, Spectroscopy and Structure of Diorganotin(IV) Schiff Base Complexes

Dey

Das

Nöth

1999

Zeitschrift Für Naturforschung B

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“…24 Mechanism behind formation of glycolates has been discussed in a number of publications. [41][42][43]…”

Section: Dalton Transactions Papermentioning

confidence: 99%

Chain length dependence of polyol synthesis of zinc ferrite nanoparticles: why is diethylene glycol so different?

et al. 2013

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Superparamagnetic ZnFe2O4 nanoparticles with size range of 28-38 nm were synthesized by polyol process based on use of varying chain length glycols as solvent. We have offered, for the first time, the plausible mechanism behind in situ formation of zinc ferric oxalate hydroxide hydrate [Fe2Zn(C2O4)2(OH)3](+)·4H2O complex from diethylene and polyethylene glycol. We are also reporting, the magnetic properties of above complexes. We have found a ferromagnetic ordering in precursor complex compounds. The intermediate hydrocarbon chain between the oxalato bridged metal cations plays a crucial role in obtaining anomalous magnetic behavior. ZnFe2O4 nanoparticles obtained after annealing the DEGylated precursor complex (precursor complex formed in diethylene glycol) showed the highest superparamagnetic (SPM) behavior (22.4 emu g(-1)) among others. The reasons for anomalous SPM behavior of ZnFe2O4 nanoparticles are explained on the basis of the degree of inversion of the spinel structure, high surface-to-volume ratio, which causes non-collinear spin arrangement in a surface layer and higher oxygen concentration on the surface of dead organic layer, which increases the unpaired valence electrons leading to uncompensated surface spins.

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