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preface to fifteenth edition

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GENERAL INFORMATION, CONVERSION TABLES, AND MATHEMATICS 2.25<br />

TABLE 2.4<br />

SI Prefixes (Continued)<br />

Numerical (multiplying) prefixes<br />

Number Prefix Number Prefix Number Prefix<br />

0.5 hemi 19 nonadeca 39 nonatriaconta<br />

1 mono 20 icosa 40 tetraconta<br />

l.5 sesqui 21 henicosa 41 hentetraconta<br />

2 di (bis)* 22 docosa 42 dotetraconta<br />

3 tri (tris)* 23 tricosa 43 tritetraconta<br />

4 tetra (tetrakis)* 24 tetracosa 44 tetratetraconta<br />

5 penta 25 pentacosa 45 pentatetraconta<br />

6 hexa 26 hexacosa 46 hexatetraconta<br />

7 hepta 27 heptacosa 47 heptatetraconta<br />

8 octa 28 octacosa 48 octatetraconta<br />

9 nona 29 nonacosa 49 nonatetraconta<br />

10 deca 30 triaconta 50 pentaconta<br />

11 undeca 31 hentriaconta 60 hexaconta<br />

12 dodeca 32 dotriaconta 70 heptaconta<br />

13 trideca 33 tritriaconta 80 octaconta<br />

14 tetradeca 34 tetratriaconta 90 nonaconta<br />

15 pentadeca 35 pentatriaconta 100 hecta<br />

16 hexadeca 36 hexatriaconta 110 decahecta<br />

17 heptadeca 37 heptatriaconta 120 icosahecta<br />

18 octadeca 38 octatriaconta 130 triacontahecta<br />

* In the case of complex entities such as organic ligands (particularly if they are substituted) the multiplying prefixes bis-,<br />

tris-, tetrakis-, pentakis-, ...areused,i.e., -kis is added starting from tetra-. The modified entity is often placed within parentheses<br />

<strong>to</strong>avoid ambiguity.<br />

TABLE 2.5<br />

Greek Alphabet<br />

Capital<br />

Lower<br />

case Name Capital<br />

Lower<br />

case<br />

Name<br />

Alpha Nu<br />

Beta Xi<br />

Gamma Omicron<br />

Delta Pi<br />

Epsilon Rho<br />

Zeta Sigma<br />

Eta Tau<br />

Theta Upsilon<br />

Iota Phi<br />

Kappa Chi<br />

Lambda Psi<br />

Mu Omega

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