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preface to fifteenth edition

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7.86 SECTION 7<br />

TABLE 7.37<br />

Raman Frequencies of Ethers (Continued)<br />

GroupBand, cm<br />

1<br />

Remarks<br />

(CH 2<br />

) n<br />

O<br />

n 3<br />

n 4<br />

n 5<br />

1040–1010 (s)<br />

920–900 (s)<br />

820–800 (s)<br />

TABLE 7.38<br />

Raman Frequencies of Halogen Compounds<br />

Abbreviations Used in the Table<br />

m–s, moderate <strong>to</strong> strong var, of variable strength<br />

s, strong vs, very strong<br />

GroupBand, cm<br />

1<br />

Remarks<br />

C9F 1400–870 Correlations of limited applicability because of vibrational<br />

coupling with stretching<br />

C9Cl 350–290 (s) CCCl bending; general<br />

Primary<br />

660–650 (vs)<br />

Secondary 760–605 (s) May be one <strong>to</strong> four bands<br />

Tertiary 620–540 (var) May be one <strong>to</strong> three bands<br />

"C9Cl 844–564<br />

438–396<br />

381–170<br />

"CCl 2 601–441<br />

300–235<br />

C9Br 690–490 (s) Often several bands; primary at higher range of frequencies.<br />

1<br />

Tertiary has very strong band at ca 520 cm .<br />

305–258 (m–s)<br />

"C9Br 745–565<br />

356–318<br />

240–115<br />

"CBr 2 467–265<br />

185–145<br />

C9I 663–595<br />

309<br />

154–85<br />

"C9I ca 180 Solid state<br />

"CI 2 ca 265 Solid state<br />

ca 105<br />

Solid state

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