Indian Journal of Chemistry

Sect. A: Inorganic, Bio-inorganic, Physical, Theoretical & Analytical

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CODEN: ICACEC; ISSN: 0376-4710 (Print), 0975-0975 (Online)

 

 

 

 

VOLUME 56A

NUMBER 2

FEBRUARY 2017

CONTENTS

 

203

 

A rare case of 2D+1D 2D Cd(II) coordination polymer without any entanglements: Synthesis, structure and luminescent property

 

 

 

 

 

 

 

 

 

 

 

 

Meiling Cheng, Enjing Zhu, Yanpeng Zhang,
Shen Wang,
Qi Liu*, Qun Chen* & Mingyang He

 

 

 

The variable architectures of two Cd(II) coordination polymers, controlled by the metal-to-ligand ratios, exhibit a structural progression from 2D rectangular grid to an unusual 2D + 1D → 2D net without any entanglements.

 

2D + 1D 2D

 

211

 

Synthesis, spectroscopic properties and theoretical calculations on methylene bridged 1,8-naphthyridine ligands and copper(I) complex through a non-catalyst C(sp3)H methylenation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gao-Zhang Gou*, Bo Zhou, Xue-Bing Chen,
Xue-Quan Wang, Chao-Yong Mang, Wei Liu,
Shao-Ming Chi
*

 

 

 

Two methylene bridged 1,8-naphthyridine ligands and a copper(I) complex is synthesized through a non-catalyst C(sp3)-H methylenation process.

 

 

220

 

H-beta zeolite catalysed synthesis of N-benzylbenzamide from benzonitrile and benzyl alcohol

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Kalpeshgiri A Gosai, Adarsh S Bhatt, Mihir R Belani, R S Somani* & H C Bajaj*

 

 

 

Ritter reaction between nitriles and alcohols with 95.4% conversion and 91% isolated yield in toluene with H-beta zeolite
as an effective catalyst is reported. The process has been applied for scale up trial on 1 g (benzyl alcohol) batch under the optimized
reaction conditions.

 

 

 

 

 

 

226

 

Hydrogenolysis of sorbitol over Ni, Pt and Ru supported on SBA-15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M Banu, T M Sankaranarayanan, P Venuvanalingam, G Magesh & S Sivasanker

 

 

 

Hydrogenolysis of sorbitol has been carried out in a batch reactor over Ni (6 wt%), Pt (1 wt%) and Ru (1 wt%) supported on SBA-15 as well as carbon coated SBA-15. Addition of Ca(OH)2 to the reaction mixture increases conversion and selectivity for the dihydroxy compounds, 1,2-propanediol and ethylene glycol. Catalytic activity at 220 C and 60 bar in the presence of Ca(OH)2 is in the order: Ru-AC (40 wt%) ~ Ru-SBA-15(C) (39 wt%) >
Ru-SBA-15 (31 wt%) ~ Ni-SBA-15 (29 wt%).

 

 

 

 

 

 

232

 

Synthesis, DNA binding properties and antibacterial activity of lanthanide complexes with
2-benzoylpyridine isonicotinoylhydrazone

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B Moksharagni, M Rishitha & K Hussain Reddy*

 

 

 

Lanthanide(III) complexes of the general formula, [Ln(BPINH)2(NO3)] (NO3)2, (where, Ln = La, Ce, Pr, Nd, Sm, and BPINH = 2-benzoylpyridine isonicotinoylhydrazone) have been synthesized under mild reaction conditions with excellent yields. Absorption titration studies reveal that these complexes are avid binders (Kb = 105) to calf-thymus DNA.

 

 

 

 

238

 

Simultaneous determination of lead and copper by anodic stripping voltammetry using a poly(L-glutamic acid) modified electrode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ning Xie, Wei Ma, Hui Gao* & Dengming Sun*

 

 

 

A new anodic stripping voltmmetric method using
poly(L-glutamic acid) modified electrode has been developed for the separation and simultaneous determination of trace amounts of Pb(II)and Cu(II). The striping peak currents are well proportional to the concentration of lead and copper over the range of 5.0010-8
1.0010-4 mol L-1,with detection limits of 5.010-9 mol L-1 and 1.010-8mol L-1, for Pb(II) and Cu(II) respectively respectively.

 

 

 

 

Authors for correspondence are indicated by (*)


 

 

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Indian Journal of Chemistry

Vol. 56A, February 2017, pp. 203-210

 

 

A rare case of 2D+1D 2D Cd(II) coordination polymer without any entanglements: Synthesis, structure and luminescent property

Meiling Chenga, Enjing Zhua, Yanpeng Zhanga, Shen Wanga, Qi Liua, b, *,
Qun Chena, * & Mingyang Hea

aSchool of Petrochemical Engineering and Jiangsu Key Laboratory of Advanced Catalytic Materials
and Technology, Changzhou University, Changzhou 213164, PR China

bState Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing,
Jiangsu 210093, PR China

Email: liuqi62@163.com (QL)/ chenqunjpu@yahoo.com (QC)

Received 29 September 2016, revised and accepted 7 February 2017

The reactions of CdCl22.5H2O with mixed ligands, H2tfbdc and hmt, under different metal-to-ligand ratios, afford two coordination polymers, namely, [Cd(hmt)(tfbdc)(H2O)2]23H2O (1) and {[NH4]2[Cd2(H2hmt)(tfbdc)2Cl4][Cd(H2hmt) (tfbdc)Cl2]}2H2O (2). Both the complexes have been structurally characterized by X-ray data. Complex 1 has a 2D rectangular grid built up by tfbdc2 and hmt ligands, while 2 consists of distinct 1D anionic ladder [Cd2(H2hmt)(tfbdc)2Cl4]2‒ and 2D grid [Cd(H2hmt)(tfbdc)Cl2] in a crystal. Further, in 2, the 2D net is parallel to the 1D ladder without mutual entanglement or interdigitation. Despite the hydrogen bond interactions and the FF interactions, only a 2D supermolecular structure is formed in 2. Thus, compound 2 is the first case of 2D+1D→2D coordination polymer without any entanglements.

Keywords: Coordination polymers, Metal organic frameworks, Supramolecular chemistry, Luminescence, Crystal structures, 1D+2D→2D, Cadmium

 

Indian Journal of Chemistry

Vol. 56A, February 2017, pp. 211-219

 

 

Synthesis, spectroscopic properties and theoretical calculations on methylene bridged 1,8-naphthyridine ligands and copper(I) complex through a non-catalyst C(sp3)H methylenation

Gao-Zhang Goua, *, Bo Zhoua, Xue-Bing Chena, Xue-Quan Wanga, Chao-Yong Mangb,
Wei Liua & Shao-Ming Chic, *

aSchool of Science, Honghe University, Mengzi, Yunnan 661199, PR China

Email: hhxylxyhxx@126.com (GZG)

bCollege of Pharmaceutical Science and Chemistry, Dali University, Dali, Yunnan 671000, PR China

cCollege of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, PR China

Email:chishaoming@gmail.com (SMC)

Received 13 April 2016; revised and accepted 13 February 2017

Two 1,8-naphthyridine derivatives containing methylene, N-(5-methyl-7-((3-oxo-1,3-dihydroisobenzofuran-1-yl)methyl)-1,8-naphthyridin-2-yl)acetamide (L1) and 2-amino-3-((7-amino-4-methyl-1,8-naphthyridin-2-yl)methyl)isoindolin-1-one (L2), as well as a copper(I) complex CuI(L1)2 (C1) have been synthesized through a non-catalyst C(sp3)H methylenation process and characterized. The structure of C1 has been determined by
X-ray diffraction analysis. The spectroscopic properties have been investigated by experimental as well as theoretical studies for all these compounds. The two ligands exhibit similar electronic absorption spectra with λmax at about 340 nm, which can be tentatively assigned to πnaph→πnaph* transition. The electronic absorption spectra of C1 exhibits at ~335 nm except in n-hexane, which may be assigned tentatively to the intraligand charge transfer transition. The assignment is further supported by density functional theory calculations and cyclic voltammetry.

Keywords: Coordination chemistry, Density functional calculations, Metal-to-ligand charge-transfer,
Crystal structure, Spectroscopic properties, 1,8-Naphthyridine, Copper

 

Indian Journal of Chemistry

Vol. 56A, February 2017, pp. 220-225

 

 

H-beta zeolite catalysed synthesis of N-benzylbenzamide from benzonitrile and benzyl alcohol

Kalpeshgiri A Gosai, Adarsh S Bhatt, Mihir R Belani, R S Somani* & H C Bajaj*

Inorganic Materials & Catalysis Division, CSIR-Central Salt and Marine Chemicals
Research Institute (CSIR-CSMCRI), GB Marg, Bhavnagar 364 002, India

Email: rssomani@csmcri.org (RSS)/ hcbajaj@csmcri.org (HCB)

Received 25 October 2016; revised and accepted 27 January 2017

Amides have been synthesized from the reaction of alcohols with various nitriles using a heterogeneous
H-beta zeolite catalyst with 91% isolated yield. The H-beta zeolite can be easily separable and recycled several times without considerable loss of its catalytic activity. The scale up trial on 1 g (benzyl alcohol) batch is reported under the optimized reaction condition.

Keywords: Catalysts, Heterogeneous catalyst, H-beta zeolite, Ritter reaction, Amides

 

Indian Journal of Chemistry

Vol. 56A, February 2017, pp. 226-231

 

 

Hydrogenolysis of sorbitol over Ni, Pt and Ru supported on SBA-15

M Banua, b, *, , T M Sankaranarayanana, P Venuvanalingamb, G Magesha & S Sivasankera

aNational Centre for Catalysis Research, Indian Institute of Technology-Madras, Chennai, 600 036, India

bSchool of Chemistry, Bharathidasan University, Tiruchirapalli, 620 024, India

Email: m.banu@ncl.res.in

Received 27 December 2016; revised and accepted 13 February 2017

Hydrogenolysis of sorbitol (15% aqueous solution) has been carried out in a batch reactor over
Ni (6 wt%), Pt (1 wt%) and Ru (1 wt%) supported on SBA-15 and carbon coated SBA-15 (SBA-15(C)). For comparison, the three metals have also been supported on activated carbon (AC). The catalysts are characterized by XRD, N2 and H2 adsorption measurements. Addition of Ca(OH)2 to the reaction mixture increases conversion and selectivity for the dihydroxy compounds, 1,2-propanediol (PD) and ethylene glycol (EG). Based on yield of dihydric alcohols (PD+EG), the performance of the catalysts at 220 C and 60 bar in the presence of Ca(OH)2 is in the order: Ru-AC ~ Ru-SBA-15(C) > Ru-SBA-15 ~
Ni-SBA-15, the yields being 40, 39, 31 and 29 wt%, respectively.

Keywords: Catalysts, Supported metal catalysts, Hydrogenolysis, Glycerol, Sorbitol, Propanediol, Glycols

 

 

 

 

 

 

 

 

 

 

 

 

Indian Journal of Chemistry

Vol. 56A, February 2017, pp. 232-237

 

 

Synthesis, DNA binding properties and antibacterial activity of lanthanide
complexes with 2-benzoylpyridine isonicotinoylhydrazone

B Moksharagni, M Rishitha & K Hussain Reddy*

Department of Chemistry, Sri Krishnadevaraya University, Ananthapuramu 515 003 (AP), India

Email: khussainreddy@yahoo.co.in

Received 18 May 2016, revised and accepted 5 January 2017

Lanthanide(III) complexes of general formula [Ln(BPINH)2(NO3)](NO3)2 (where, Ln = La, Ce, Pr, Nd, Sm, and BPINH = 2-benzoylpyridine isonicotinoylhydrazone) have been synthesized under mild reaction conditions with excellent yields. The structure of BPINH is determined using single crystal X-ray diffraction studies. The lanthanide complexes have been characterized by elemental analysis, molar conductance and various spectral techniques such as FT-IR, UV-vis, IR and 1H-NMR spectroscopies. Electrolytic nature of complexes is investigated by conductivity studies. The spectral data suggest that the ligand acts as a neutral tridentate
NNO-donor system. Electrochemical behaviour of metal complexes is investigated by using cyclic voltammetry. The complexes undergo quasi-reversible one-electron reduction. Absorption titration studies reveal that these complexes are avid binders (Kb = 105) to calf-thymus DNA. The antibacterial activities of the ligand and its lanthanide complexes have been screened in vitro against, Bacillus subtilis (MTCC-441) and Staphylococcus aurous (MTCC-3160) which are gram positive and Salmonella typhi (MTCC-735) and Escherichia coli (MTCC-1652) which are gram negative organisms. It has been observed the lanthanide complexes show more pronounced activity than the ligand (BPINH).

Keywords: Coordination chemistry, Lanthanum, Cerium, Praseodymium, Neodymium, Samarium,
2-Benzoylpyridine
isonicotinoylhydrazone, Hydrazones, DNA binding and Antibacterial activity

 

Indian Journal of Chemistry

Vol. 56A, February 2017, pp. 238-242

 

 

Simultaneous determination of lead and copper by anodic stripping voltammetry using a poly(L-glutamic acid) modified electrode

Ning Xie, Wei Ma, Hui Gao* & Dengming Sun*

College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui, 235000, PR China

Email:gaohui20032@163.com (HG); sundengming@126.com (DS)

Received 25 September 2016; revised and accepted 27 January 2017

A new anodic stripping voltmmetric method using a poly(L-glutamic acid) modified electrode has been developed for the separation and simultaneous determination of trace amounts of lead(II)and copper(II). The striping peak currents are well proportional to the concentration of lead and copper over the range of
5.0010-8
1.0010-4 mol L-1, with detection limits of 5.010-9 mol L-1 and 1.010-8mol L-1, respectively. The method has been successfully applied to the analysis of Pb2+ and Cu2+ in the waste water samples with good precision and accuracy.

Keywords: Electroanalysis, Anodic stripping voltmmetry, L-Glutamic acid, Modified electrodes, Lead, Copper