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N. Jaiswal et al.: Synthesis, characterization and computational studies
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(
Ar-C-O), 156.3 (C=N), 148.2, 134.4, 132.4, 132.3, 122.8, for their kind help in spectroscopic and mass analysis,
1
22.3, 121.7, 119.0, 116.9, 114.7 (Ar-C); 119Sn NMR (CDCl ) respectively.
3
−1
−1
(
3
ppm): -629.8; UV-Vis (CH OH) [λmax, nm (ε, M cm )]:
3
70 (6100), 280 (6300), 240 (11200); ESI-MS (m/z): 650.12.
B i s -2 - ( ( ( 4 - b r o m o p h e n y l ) i m i n o ) m e t h y l )
2
phenolatodichlorotin(IV), [(sb ) SnCl ] 2 Yield: 68%, References
2
2
Brown solid, mp: 140-142°C; Mol. Weight: 739.86; Elem.
Anal. for C H Br Cl N O Sn, Calc.: C, 42.21; H, 2.45; N,
Al‐Allaf T.A., Rashan L.J., Stelzner A., Powell D.R., Organotin(IV)
complexes with various donor ligands and their cytotoxicity
against tumour cell lines. Part (I): R SnCl with Schiff bases;
2
6
18
2
2
2
2
3
.79; Sn, 16.04 Found: C, 41.85; H, 2.35; N, 3.65; Sn, 15.84%;
−
1
2
2
IR (KBr pellets, cm ): 1605 s (vC=N), 1243 s (vC-O), 561 w
unusual C=N bond cleavage of the bases and X‐ray structures
of the ionic products formed. Appl. Organomet. Chem., 2003,
1ꢉ(12), 891-89ꢉ.
1
(
(
(
1
vSn-O), 467 w (vSn-N); H NMR (CDCl ) (δ , ppm): 8.36
3
H
1
3
s, 2H, CH = N), 7.45 – 6.95 (16H, m, Ar-H); C NMR (CDCl )
3
δ , ppm): 164.5 (Ar-C-O), 155.3 (C=N), 148.4, 142.3, 135.8, Armarego W.L.F., Perrin D.D., Purification of laboratory chemicals (4th
C
1
19
Ed.). Butterworth, Henemann, Oxford, 199ꢉ.
Becke A.D., Density‐functional thermochemistry. III. The role of exact
exchange. J. Chem. Phys., 1993, 98(ꢉ), 5ꢊ48-5ꢊ52.
33.0, 132.1, 127.2, 123.0, 118.2, 117.9, 116.1 (Ar-C); Sn
NMR (CDCl ) (ppm): -626.2; UV-Vis (CH OH) [λmax, nm
3
3
−1
−1
(
(
ε, M cm )]: 350 (7900), 290 (8200), 239 (13100); ESI-MS
Chauhan M., Arjmand F., Stannoxane capping derived from chiral
tridentate NNO donor ligand for nickel and copper macrocycles:
Comparative binding studies of stannoxane moiety and its
modulated copper complex with CT-DNA. J. Organomet. Chem.,
m/z): 739.10.
Bis-2-(((4-chlorophenyl)imino)methyl)-6-methoxyph
3
enolatodichlorotin(IV), [(sb ) SnCl ] 3 Yield: 62%, Brown
2
2
2
00ꢉ, ꢊ92(23), 515ꢊ-ꢊ4.
solid, mp: 148-150°C; Mol. Weight: 711.01; Elem. Anal. for
Che C.M., Siu F.M., Metal complexes in medicine with a focus on
enzyme inhibition. Curr. Opin. Chem. Biol., 2010, 14(2), 255-2ꢊ1.
Chen Z.F., Peng Y., Gu Y.Q., Liu Y.C., Liu M., Huang K.B., et al.,
High antitumor activity of 5, ꢉ-dihalo-8-quinolinolato tin(IV)
complexes. Eur. J. Med. Chem., 2013, ꢊ2, 51-58.
C H Cl N O Sn, Calc.: C, 47.30; H, 3.12; Cl, 19.95; N, 3.94;
2
8
22
4
2
4
Sn, 16.70, Found: C, 47.95; H, 3.23; N, 3.59; Sn, 15.96%; IR
-
1
(
KBr pellets cm ): 1602 s (vC=N), 1288 s (vC-O), 545 m (vSn-O),
47 w (vSn-N); H NMR (CDCl ) (δ , ppm): 8.34 (s, 2H,
1
4
3
H
13
Darensbourg D.J., Ganguly P., Billodeaux D., Ring-opening polyme-
rization of trimethylene carbonate using aluminum(III) and
tin(IV) salen chloride catalysts. Macromolecules, 2005, 38(13),
CH = N), 7.50-6.78 (16H, m, Ar-H), 3.89 (s, 6H, CH ); C NMR
3
(
CDCl ) (δ ppm): 154.32 (Ar-C-O), 158.63 (-C=N), 148.2,
3 C,
1
47.3, 132.5, 123.9, 122.5, 120.8, 119.4, 118.3, 115.2 (Ar-C),
6.8 (O-CH ); Sn NMR (CDCl ) (ppm): -626.1, UV-Vis
5
40ꢊ-5410.
1
19
5
3
3
Dubey R.K., Baranwal P., Jha A.K., Zinc(II) and mercury(II) complexes
with Schiff bases: syntheses, spectral, and structural characte-
rization. J. Coord. Chem., 2012a, ꢊ5(15), 2ꢊ45-2ꢊ5ꢊ.
−
1
−1
(
CH OH) [λ , nm (ε, M cm )]: 320 (10400), 292 (7400),
3
max
2
40 (14000); ESI-MS (m/z): 710.83.
Dubey R.K., Dubey U.K., Mishra S.K., Synthesis, spectroscopic (IR,
electronic, FAB-mass, and PXRD), magnetic, and antimicrobial
studies of new iron(III) complexes co ntaining Schiff bases
and substituted benzoxazole ligands. J. Coord. Chem., 2011a,
ꢊ4(13), 2292-2301.
Bis-2-(((4-bromophenyl)imino)methyl)-6-methoxyp
4
henolatodichlorotin(IV), [(sb ) SnCl ] 4 Yield: 64%, Dark
2
2
brown solid, mp: 158-160°C; Mol. Weight: 799.91; Elem.
Anal. for C H Br Cl N O Sn, Calc C, 42.04; H, 2.77; N, 3.50;
2
8
22
2
2
2
4
Sn, 14.84, Found: C, 43.09; H, 2.87; N, 3.65; Sn, 14.51%; Dubey R.K., Singh A.P., Dimeric and monomeric six-coordinate tin(IV)
1
13
119
-
1
complexes: synthesis and spectral (IR, NMR ( H, C, Sn),
TOF-MS, and ESI-MS) studies. J. Coord. Chem., 2013, ꢊꢊ(12),
IR (KBr pellets, cm ): 1605 s (vC=N), 1290 s (vC-O), 549 m
1
(
vSn-O), 461 w (vSn-N); H NMR (CDCl ) (δ , ppm): 8.27 (s, 2H,
3
H
2
201-220ꢉ.
13
CH=N), 7.45-6.81 (m, 16H, Ar-H), 3.84 (s, 6H, CH ); C NMR
3
Dubey R.K., Singh A.P., Reaction of titanium(IV) tetraisopropoxide
with salicylidene-2-aminopyridine and spectral studies. Indian
J. Chem., 2014, 53A, 139ꢉ-1401.
(
CDCl ) (δ ppm): 152.3 (Ar-C-O), 159.6 (C=N), 148.2, 146.3,
3
C,
1
39.1, 134.9, 132.6, 130.2, 129.7, 126.9, 122.7, 118.1, 115.2 (Ar-C),
Sn NMR (CDCl ) (ppm): -627.3, UV-Vis (CH OH) [λmax, nm
Dubey R.K., Singh A.P., Synthesis, spectroscopic [IR,( H, C, 2ꢉAl) NMR]
and mass spectrometric studies of aluminium(III) complexes
containing O-and N-chelating Schiff bases. Main Group Met.
Chem., 2015, 38(1-2), 1ꢉ-25.
1
13
119
3
3
−1
−1
(
ε, M cm )]: 330 (7800), 290 (6800), 233 (12600); ESI-MS
(
m/z): 798.87.
Dubey R.K., Singh A.P., Dwivedi N., Synthesis and physicochemical
characterization of some hexacoordinated tin(IV) Schiff base
complexes. Main Group Met. Chem., 2011b, 34(3-4), ꢉꢉ-83.
Dubey R.K., Singh A.P., Dwivedi N., Triorganotin(IV) derivatives
of bidentate Schiff bases: synthesis and spectral studies.
Phosphorus Sulfur, 2012b, 18ꢉ(9), 1038-1045.
Dubey R.K., Singh A.P., Patil S.A., Synthesis, spectroscopic charac-
terization and DNA cleavage studies of dibutyltin(IV) complexes
of bidentate Schiff bases. Inorg. Chim. Acta, 2014, 410, 39-45.
Acknowledgement: The authors (NJ and AK) gratefully
acknowledge University Grant Commission, New Delhi
for financial assistant in the form of fellowship. Authors
are also thankful to Anup Kumar Sharma, Department
of Chemistry, Institute of Science, BHU and Siddharth
Baranwal, Department of Chemistry, IIT BHU, Varanasi
Unauthenticated
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