Structural, Spectral, Biological and Electrochemical Studies Of Some ...

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Table.2.7 Selected bond lengths [A] and bond angles [deg] list ofbond lengths (A). list ofbond angles(Degree) CIb NIb 1.469 01a C2a CIa 112.11 Clb C2b 1.486 OIb C2b Clb 111.58 C2a Ola 1.423 Olb C3b C4b 112.24 C2a CIa 1473 Nla C4a C3a 109.81 C2b Clb 1.486 N2a C5a Nla 114.24 C3a 01a 1.423 N2a C5a Sla 124.37 C3a C4a 1.481 Nla C5a Sla 121.38 C3a Olb 1.417 NIb C5b N2b 114.29 C3a C4b 1.475 N2b C5b SIb 124.21 C4a Nla 1.451 N3a C6a C12a 119.79 C4a C3a 1.481 C7a C6a CI2a 123.82 C4b C3b 1.475 N3b C6b C7b 116.69 C5a N2a 1.344 C7b C6b C12b 123.25 C5a Nla 1.352 N4a C7a Clla 121.77 C5b NIb 1.346 N4a C7a C6a 116.25 C5b N2b 1.346 N4b C7b C6B 116.29 C5a SIb 1.713 Cllb C7b C6b 121.58 C6a N3a 1.300 N4a C8a C9a 123.33 C6a N3b 1.297 CIOa C9a C8a 118.47 C6b C7b 1.472 CI0b C9b C8B 118.70 C6b C12b 1.477 C9a CI0a Clla 119.35 C8a N4a 1.334 C9b CI0b Cllb 119.63 C8a C9a 1.373 CI0a Clla C7a 118.63 C8b N4b 1.325 CIOb Cllb C7b 117.84 C8b C9b 1.374 C5a Nla C4a 124.59 C9b CI0b 1.364 C4a Nla CIa 111.99
the same exists as two crystallographically equivalent molecules assembled in an offset fashion via strong intra molecular H- bonding interactions in an asymmetric unit. In each monomer, the N-N distance is less than 1.44 A accepted as a typical of single N-N bonds, and agrees well with those of similar thiosemicarbazones [13]. The C-S distance is intermediate between those of single and double C-S bonds, 1.82 and 1.56 A respectively, showing partial double bond character, implied by the canonical structures usually considered for thiosemicarbazones in solution. The azomethine bond length is likewise short enough to imply a partial double bond character [14]. Pyridine moiety in monomer is almost planar but the thiosemicarbazones moiety is not exactly coplanar, because C (9) C (8) N (3) and C (8) N (3)N (2) angles are 116.99° and 124.75°. Fig 2.9. PLATON diagram of Compound HL4M, indicating H- bonding interactions between the molecules. The morpholine moiety assumed almost chair conformation. The packing diagram shows that H of morpholino group is intennolecularly hydrogen bonded to 33
Page 3 and 4: Declaration Certificate Acknowledge
Page 5 and 6: Chapter3. 40 SPECTRAL, ELECTROCHEMI
Page 7 and 8: 5.2 Experimental 116 5.2.1 Material
Page 9 and 10: Chapter8 173 SPECTRAL, BIOLOGICAL (
Page 11: PREFACE The work embodied in this t
Page 14 and 15: Recently radionuclides have attract
Page 16 and 17: thione thiol Fig 1.1 The existence
Page 18 and 19: thiol equilibrium which in turn is
Page 20: g)/mL. Since then, several workers
Page 23 and 24: References 1. D. L. Klayman, J. F.
Page 26 and 27: (Hexahydroazepine-4-thiocarboxylic
Page 28 and 29: an additional 22 minutes. The cryst
Page 30 and 31: Fig. 2.4 Structuralformula oJH2SAP
Page 32 and 33: 2.6.5. NMR spectra IH and 13C NMR s
Page 34 and 35: that the condensation reaction is i
Page 42: ·r.hle 2." 11-1 NMR assignments fo
Page 48 and 49: thione S in a molecule on one side
Page 50 and 51: Table 2.8. Crystal data andstructur
Page 52 and 53: Cs point group. The unit cell conta
Page 54 and 55: 2.10 Concluding remarks. Synthesize
Page 56 and 57: Chapter 3 SPECTRAL, ELECTROCHEMICAL
Page 59 and 60: 3.2 Experimental 3.2. JMaterials Th
Page 61 and 62: Azido[ I-H-morpholine-I-thiocarbohy
Page 64 and 65: complexes indicate that they are ma
Page 66: indication of sulphur coordination
Page 69 and 70: The perchlorate complex 9 shows a s
Page 75: gfactors were quoted relative to th
Page 81: Fig 3.3(d) EPR spectra in polycryst
Page 85 and 86: Fig 3.3g EPR spectra in solution st
Page 90: Table 3.S.b Orbital reduction param
Page 97 and 98:
complexes of thiosemicarbazones ind
Page 99:
The synthesized N-N-S ligands and t
Page 103:
"·able.3.7 Microbial studies ofN-N
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3.6 Concluding remarks According to
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18 P. Bindu, M. R. P. Kurup.T. R. S
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53 54 55 56 57 58 59 60 61 62. 63 6
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In recent years considerable intere
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·.......... Analytical data. condu
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Table 4.2 Selected IR bands (crn")
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4.4.4 EPR spectra The EPR spectra o
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Fig 4.2c EPR spectra ofcopper compl
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the metal ion can easily be found b
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"'.ble4.7 Antimicrobiall studies of
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110 activity ofthe complexes and li
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the minerals carnotite [K2(U02)2(V0
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observations generated sufficient i
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118 by thiocyanate anion as confirm
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Fig 5.4 EPR spectra ofvanadyl compl
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Fig 5.5 Experimentalia) and Simulat
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core. Ofthe two VI-N bonds generate
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References M. E. Weeks and H. M. Le
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137 solution of potassium thiocyana
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indicating the existence of two typ
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tetrahedral. Complexes with nitrate
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6.7 Concluding remarks 151 The N-N-
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those of Parkinson's disease. Due t
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157 With O-N-S donors coordination
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Fig 7.4 EPR spectra ofmanganese com
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7.6 X-ray diffraction studies of bi
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viz, thiolate sulphur (SI) and pyri
Page 215 and 216:
References D. Evans K. S. Hallwood
Page 217 and 218:
Chapter 8 SPECTRAL, BIOLOGICAL (STR
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methanol and ether and dried in vac
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Mainly because of the solubility pr
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8.6 X-ray diffraction studies of [N
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The selected crystals of compound 4
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187 In the cation Ni(II) displays p
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References M. A. Halcrow and G. Chr
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Chapter 9 Zn(II) COMPLEXES WITH TRI
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This Chapter describes the synthese
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aromatic ring are found between 0 7
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Table 9.4 lH NMR assignments ofN-N-
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vice versa. There is no diagonal sp
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9.5 Concluding remarks Bacillussp.
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analyses, magnetic susceptibility,
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egion. The profile of its voltammog
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