Ravindran, K.C., Indrajith, A., Balakrishnan, V., Venkatesan, K., Kulandaivelu, G.
Field studies were conducted to determine the role of defense mechanism in various parameters associated with plant protection subjected to UV-B radiation in Phaseolus trilobus Ait. commonly used as...
High-quality binary protein interaction map of the yeast interactome network (2008)
YU, HY, BRAUN, P, YILDIRIM, MA, Lemmens, Irma, VENKATESAN, K, SAHALIE, J, ...
Volume-Demanding Cis-Trans Isomerization of 1,2-Diaryl Olefins in the Solid State (2006)
Natarajan, Arunkumar, Mague, Joel T, Venkatesan, K, Arai, T, Ramamurthy, V
Volume-demanding cis-trans photoisomerization of the aromatic substituted alkenes 1-3 in the solid state at roorn temperature and at 50 degrees C is presented. Alkene 3 did not undergo the cis-trans...
The effect of grain size on the mechanical properties of AM-SC1 (2004)
Dunlop, G., Beetles, C.J., Griffiths, J. R., Venkatesan, K., Zheng, L., Ma, Q.
Vishnumurthy, K, Row, TNG, Venkatesan, K
(1E,3E)-1,4-Diphenylbuta-1,3-diene is photostable in the crystalline state, while fluoro-substitution induces reactivity. Crystals of (1E,3E)-1-pentafluorophenyl-4-(4-methoxyphenyl)buta-1,3-diene 1,...
HOLZ line analysis of lattice parameters in magnesium alloys (2001)
A method of refining lattice parameters from deficit higher‐order Laue zone (HOLZ) line data from large angle convergent beam electron diffraction (LACBED) data is presented, relying on...
Structural Studies of 'Push-Pull' Butadienes (1993)
Dastidar, P, Row, Guru TN, Venkatesan, K
Compound (I), ethyl 2-cyano-5-dimethylamino-3- methyl-2,4-pentadienoate, {C_{11}H_{16}N_20_2}, $M_r = 208.26$, monoclinic, {P2_1/n}, a = 7.679 (2), b = 13.368 (2), $c = 11.756 (2) \AA$, $\beta= 92.62...
Kumar, Amarendra V, Venkatesan, K
(E)-2-Isopropylidene-3-(1-naphthylmethylene)succinic anhydride, {C_{18}H_{14}O_3}, {M_r = 278.31} monoclinic, {P2_1/c}, a = 13.408(1), b = 8.762(1), $c = 13.431(1) \AA$, $\beta = 117.50(1)^0$ {V =...
Crystal Engineering: Fluorine as a New Steering Group (1993)
Kumar, Amarendra V, Begum, Noor Shahina, Venkatesan, K
For the first time fluorine has been examined as a steering group for crystal engineering. In sharp contrast to the packing and photo behaviour of unsubstituted coumarin, molecules of both 6- and 7-...
Muthu, Victor DS, Chandrabhas, N, Sood, AK, Venkatesan, K, Venugopalan, P, Jayaraman, A
The octachloro cyclic phosphazene tetramer $P_4N_4Cl_8$ was studied by high-pressure Raman spectroscopy up to 10 GPa in the K form (boat-shaped molecule) and in the T form (chair-shaped molecule)....
Crystals of bis(butoxycarbonyl)-substituted tetrathiafulvalene having three reactive double bonds yield upon irradiation two products, a “cage product” (II) as well as another (I) by the...
3-(p-Chlorophenylvinyl)-6-isopropyl-2-cyclohexen- 1 -one, $C_{17}H_{19}CIO$, $M_r$=274"7, triclinic, P1, a =6.636(1), b=10.537(2), c=10.811(3) A, $\alpha$=95.31 (2), $\beta$ = 92"60 (2), $\gamma$ =...
Vyas, K, Manohar, H, Venkatesan, K
Anal. of thermal motion, using the anisotropic displacement parameters obtained from x-ray crystal structure anal., has been employed to understand the thermally induced O to N acyl migration...
Structure Reactivity Correlation in Inclusion Complexes: Deoxycholic Acid-Thiocamphenilone (1987)
Padmanabhan, K, Ramamurthy, V, Venkatesan, K
The 2:1 inclusion complex formed between deoxycholic acid $(C_{24}H_{40}O_4, M_r = 392.58)$ and thiocamphenilone $(C_9H_{14}S, M_r = 154.28)$ crystallizes in the space group $P2_12_12$ with...
Structure of $\alpha$-Benzylidene-$(\pm)$-piperitone, an Exception to Topochemical Behaviour (1987)
Kanagapushpam, D, Ramamurthy, V, Venkatesan, K
$C_{17}H_{20}0$, $M_r = 240.2$, monoclinic, $P2_1/n$, a = 6.116(2), b = 16.127 (3), $c = 14.417(5)\AA$, $\beta = 96.62(2)^0$, $V = 1412.5 (7) \AA^3$, Z = 4, $D_m = 1.13$, $D_x = 1.129 Mg m^{-3}$,...
KANAGAPUSHPAM, D, PADMANABHAN, K, VENKATESAN, K
$C_{19}H_{34}N_20_3.1\2H_2 O$, Mr= 347.5, monoclinic, C2, a = 15.473 (3), b = 6.963 (2), c = 20.708 (4)\AA, \beta= 1 0 8 . 2 ( 2 ) ° , $V=2119(2)\AA ^3, Z=4, D_x= 1.089 Mg mm^{-3}$, \lambda(Cu...
Consequences of lattice relaxability in solid state photodimerizations (1987)
Murthy, GS, Arjunan, P, Venkatesan, K, Ramamurthy, V
With the view to understand the photobehavior of olefinic cryst. compds. lattice energy calcns. have been performed for a no. of photodimerizable olefins. It is shown that to rationalize the...
Kasturi, TR, Rajasekhar, B, Sivaramakrishnan, R, Reddy, Amruta P, Madhusudhan, G, Prasad, KB, ...
Structures of novel products obtained in the reaction of the title naphthol ether $I (R = H, Br)$ with tetrachlorocatechol in the presence of anhyd. $K_2CO_3$ in $Me_2CO$ have been assigned as $II...
The effect of clofazimine on the pharmacokinetics of rifampicin and dapsone in leprosy (1986)
Venkatesan, K., Mathur, Anil, Girdhar, B. K., Bharadwaj, V. P.
Fifteen untreated leprosy patients were given rifampicin and dapsone for seven days, and then rifampicin, dapsone and clofazimine for seven days. Concentrations of rifampicin and dapsone were...
Oxidation of 2,2'-Dihydroxy-1,1'-binaphthyl by Periodic Acid. Structure of the product (1985)
Perumal, PT, Bhatt, MV, Venkatesan, K, Cameron, TS, Gillard, B
Oxidation of 2,2'-dihydroxy-l,l'-binaphthyl with periodic acid gives a new nine-membered keto lactone. The implication of this result on the mechanism of oxidation of phenols by periodic acid has...
A Study on the Photochemical Dimerization of Coumarins in the Solid State (1985)
Gnanaguru, K, Ramasubbu, N, Venkatesan, K, Ramamurthy, V
Solid-state photochemical behavior of 28 substituted coumarins has been investigated. Of these twelve underwent photodimerization and this is remarkable in light of the inertness of coumarin itself...
Gnanaguru, K, Ramasubbu, N, Venkatesan, K, Ramamurthy, V
Photodimerizations of 7-chlorocoumarin and 7-methoxycoumarin in the solid state were studied; syn head-to-head and syn head-to-tail dimers are the respective products of irradiation in the solid...
4-Biphenylyl phenyl thioketone (I), C19H14S, and 1-naphthyl phenyl thioketone (II), C17H12S (1984)
Arjunan, P, Ramamurthy, V, Venkatesan, K
(I): Mr=274"39, orthorhombic, Pbca, a = 7.443 (1), b= 32.691 (3), c= 11.828 (2)A, V= 2877.98A 3, Z=8, Din= 1.216 (flotation in KI), D x = 1.266 g cm -3, /~(Cu Ka, 2 = 1.5418 A) = 17.55 cm -1, F(000)...
Mr = 248, monoclinic, P21/n, a = 12.028 (2), b=7.168(2), c= 15.187(5)A, fl=91.88(2) °, Z= 4, V= 1308.6,~3, Din= 1.26, Dx= 1.263 Mgm -3, 2 (Cu Ka) = 1.5418 .A, g = 0.86 mm -1, F(000) = 536, T= 293 K....
Adhikesavalu, D, Venkatesan, K
(I): $M_r$= 168, triclinic, $P^-_1$, Z=2, a=5.596 (2), b = 6.938 (3), c = 10.852 (4)\AA, \alpha= 75.64 (3), \beta= 93.44 (3), \gamma= 95.47 $(3)^o$, V=406.0 $\AA^3$, $D_m$= 1.35 (by flotation using...
Adhikesavalu, D, Venkatesan, K
(I): Mr= 168, triclinic, P1, Z=2, a= 5.596 (2), b = 6.938 (3), c = 10.852 (4) A, ~t= 75.64 (3), fl= 93.44 (3), ),= 95.47 (3) °, V= 406.0A 3, Din= 1.35 (by flotation using carbon tetrachloride and...
Adhikesavalu, D, Venkatesan, K
(I): $M_r$= 167, orthorhombic, $Pna2_1$ , Z = 4, a=7.899(3), b=8.670(2), c=12.956(6) \AA, V= 887.2 $\AA^3$, $D_m$= 1.25, $D_ x$= 1.250 $Mg m^{ -3}$, $\mu$(Mo $K_\alpha$, $\lambda$ = 0-7107 \AA) =...
Crystallographic study of push-pull ethylenes (1983)
Adhikesavalu, D, Kamath, Nirupa U, Venkatesan, K
From structural data of several crystal structure analyses of push-pull ethylenes it is found that C=C bond lengths in this class of molecules are significantly longer than the value for this bond in...
Reversible photodimerization of phenylbutadienes in the solid state (1983)
Row, TNG, Swamy, HR, Acharya, KR, Ramamurthy, V, Venkatesan, K, Rao, CNR
Based on x-ray crystallographic studies, it is shown that crystal chemical factors govern the reversible photodimerization of phenylbutadienes in the solid state.
Crystal and molecular structure of isogarcinol (1982)
The controversy with regard to the structures of the closely related polyisoprenylated phenolic compounds, garcinol, isogarcinol, camboginol, cambogin, xanthochymol and isoxanthochymol is cleared by...
Bhadbhade, MM, Venkatesan, K, Mehta, G, Rao, KS
C 15H 1602 (a synthetic precursor to dodecahedrane), monoclinic, P21/n, a = 12.171 (5), b = 6.976(5), c = 13.868 (3) A, B = 102.56 (3) ° , Z = 4, D m = 1.30, D c = 1.318 g cm -3, F(000) = 488, g(Mo...
Concerning hypophyllanthin (1980)
Bhadbhade, Mohan M, Rao, Subba GSR, Venkatesan, K
The structure (1) for hypophyllanthin was confirmed by X-ray crystallography.