Rao, K V Kameswara

Rao, V Ramakrishna

English

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J la t te t A  t o  t h e  £ d i t o tT h r  B o a r d  o f  E d i to r s  w ilt  n ot h old  itaoJf rfsp o n a ih h , Jor o p in io n s  e x p r e s s e d  in  the le tters  p u h h a h e d  in  th is  s e c t io n . T h e  n otes  e o n tu in in q  rep orts  o f  iiew  w o rk  co m m u n ic a te d  f o r  th is  s e c tio n  s h o u ld  n o t  c o n ta in  m a n i/J iiju rc s a n d  sh o u ld  n ot c x ie ed  5 0 0  w o rd s  in  len g th . T h e  c o n tr i ­b u tio n s  m u s t  rea ch  the A s s i s ta n t  E d ito r  n ot la ter th a n  the 1 5 th  o f  the seco n d  m on th  p ie e e d im j that  o f  the issue, i n  w h ic h  the letter  i s  to a p p e a r  N o  p r o o f  w ill  be sen t to the a u th o rs .THE NEAR ULTRAVIOl.ET ABSORPTION SPECTRA OF THE THREE ISOMERIC METHYL PHENETOLESK V, KAMEHWARA KAO ani> V. UAMAKIUMHNA RAODiiHMUTMl'^NT OF T il  VKIl'.S, V L'NIVE HSITY, W'a LTM R(R u e i e e i l .  M a t /  2 , HUiO)Tlu ‘ near ultniviolH  absorption spectra o f  oitlio -, ineta-, and para-niotliy] plicnetoles were invehtif^sated in the vapour, Inpiid and solid jihasus(hiho-inetliyl, phenetoleIn absorption in vauoiir about 20 bands AU'ie measured and th(‘ intense band at 2751 OA (3(i3;32 eiii was taken as tlie (0 ,0) band. The Sjieetrnm eouid lie interpreted on th(‘ basis o f lour fuiidainentaJ fieipieneies in tin* uppei state (55-1, 7!{4, 950 ami 1275 cm and one luiidamental in the ground state (42K cm ’ ).In absorplion in solid state three hands \vc‘re obtained and the intense baud at 2787 A. (35870 ein was taken as the (0 ,0) band. 'Hu; speetrum eouid be interpreted on the basis of two upper state fundamentals (830 and 1952 cm )^ Mela-methyl phenetole.In absorption speetrum of vapour about 23 bauds were- measured and the intense band at 2775.7 A (30016 ein' )^ was taken as the (0, 0) band. The spectrum e-ould be interpreted on the basis of live fundaineiital frequencies in the*- iippei* state (683,741, 912, 1102 and 1279 cnr^).Ju absorption in liquid state three bauds w'crc obtained and the intense band at 28071 (35615 cm-i) was taken as the (0,0) band 3^ hc spectrum could be interpreted on the basis of one upper state luiidamental 897 enr bIn absorption in solid state three bands were obtained and the intense band at 2805 A (35640 em-i) was taken as the (0, 0) band. The spectrum could be interpreted on the basis of one upx>er state fundamental 886 eni'^289290 Loiters to the EditorP(m t-m i4hyl phenHolcfn absorption spoflnmi of Iho va])our about Ii5 bauds wore mcasmod ami the inieus(  ^ t»aud at 2820.b A (35304 cm 0 taJvCu as liir (0, 0) baud. Tho spectrum could be mtorpreted on the basis of six fuiidafneiilal frequencies in the upper slate (503, ti35, 801, tISb. 1120 and 1203 cur and one fuiidaineuUil in the i^rouud state (235 cm ')in absorptaon in liquirL state two band.s were obLamed ajid the intense band at 2873 A (347b7 (in 0 taken, as the (0, 0) band The otheu- band was iuter- j)reled as the uj)])er state fundamental 830 cmIn absorption spectrum ot the solid eleven bands weie obtained and tlie intense band at 2880 A (34712 cm was laktm as the (0, 0) band. I'lie spectrum was interpreted on the basis of three upper stall* hindanientals (452, 814 and1197 cm 0- \3’h(‘ (hdads will be published shmtly \10STRUCTURE OF NAPHTHAZARIN, G,oH^02(CH).,I’ SlllVAS'rAVAI m m a k  A s s o c i a t i o n  m ) i; n' i i t ; r e i / n v A T i o N  o r  S c i c n c i :, C ai a  i /j 't a -;?:!{J {r i  ni'i-tJ, IS,Naphthazaiin exists in three different moditicatious 3’lu* lesidts ol X-iav study on all these* different fonns have been summed uji by Ibirgem (1950) and by (folder and Zhdanov (1958). A prelnninarv X-ray investigation on modi- lication 11, in the notalioiis of Borgen. w as made by Si ivastava (1958) and Uitci’ by Billy (1958) also Billy has given the rough atomic [lositions Avhicli she esti­mated from three dimensional Patterson’s synthesis and the projections obtained with the helj) ol von Eller’s fihotosuinmatorIn the present eommuiueation the molecular structure of naphthazarin has been determined by means of two-diineiiaional Fy-synthcsis alsoiig [OIO]. The crystallographic data are :a — 7.90 A, b -  7.30 A, r --- 10.91 A and // - 124‘ 38'The crystal belongs to space group No. contains four luolecuU'sin a unit cell.The molecular orientation was known from the study of magnetic anisotro­pies 111 the (“ly.stal by Banerji (1938). Ho further suggests that the intersections of the four molecular planes with (010) cannot all be along the same direction,

The Near Ultraviolet Absorption Spectra of the Three Isomeric Methyl Phenetoles

http://arxiv.iacs.res.in:8080/jspui/bitstream/10821/2296/1/The%20Near%20Ultraviolet%20Absorption_K%20V%20kamehwara.pdf

The Near Ultraviolet Absorption Spectra of the Three Isomeric Methyl Phenetoles

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