کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1526202 | 995367 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spectral characterisation of five volatile bis(N-R-salicylaldimine)nickel(II) (where n-RÂ =Â methyl to pentyl) complexes and single crystal study on methyl analogue
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Spectral characterisation of five volatile bis(N-R-salicylaldimine)nickel(II) (where n-RÂ =Â methyl to pentyl) complexes and single crystal study on methyl analogue Spectral characterisation of five volatile bis(N-R-salicylaldimine)nickel(II) (where n-RÂ =Â methyl to pentyl) complexes and single crystal study on methyl analogue](/preview/png/1526202.png)
چکیده انگلیسی
Five novel volatile complexes of nickel, namely bis(N-R-salicylaldimine)nickel(II) (where n-R = methyl to pentyl), were characterised using fast atom bombardment mass spectrometry (FABMS). The molecular masses (M) of the monomeric species [NiL2] (L = N-R-salicylaldimine) were identified to be m/z (Dalton) = 327, 355, 383, 411 and 439, respectively, for methyl to pentyl homologues in agreement with the theoretical values. The melting and sublimation/vapourisation temperatures under reduced pressure (â¼2 mbar) were indicative of a negative volume change upon melting for all the homologues besides confirming their volatility to nil residue in the temperature range 305-340 °C. The coordination of nitrogen (N with n-alkyl chains) to the nickel centre that is thought to be responsible for their volatility was confirmed by Fourier-transformed infrared (FT-IR) spectroscopic analysis; ν(NiN) (cmâ1): 502 (methyl), 522 (ethyl), 533 (propyl), 531 (butyl) and 549 (pentyl). Single crystal XRD analysis of the first member of this series, namely bis(N-methyl-salicylaldimine)nickel(II), confirmed the existence of this complex to be a monomer in the solid state and the crystal data are: 293 (2) K, a = 8.352 (3) Ã
, b = 7.103 (2) Ã
, c = 12.1369 (18) Ã
, α = 90°, β = 92.850 (18)°, γ = 90°, monoclinic, space group P21/a, Z = 2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 114, Issue 1, 15 March 2009, Pages 456-461
Journal: Materials Chemistry and Physics - Volume 114, Issue 1, 15 March 2009, Pages 456-461
نویسندگان
S. Arockiasamy, M.G. Johnson, C. Mallika, O.M. Sreedharan, K.S. Nagaraja,