Chen The electron capture detector

347

Figure AIII.4 The error for one temperature is reduced to 1 K, as opposed to 5 K for the other data point. This illustrates the importance of proper weighting.

348 APPENDIX III

To illustrate the effect of weighting the values, a smaller error in T, 1 instead of 5 , will be assumed for one point. If the second data point had been part of a concentration study where the temperature was stabilized and multiple samples injected, this might be possible. As shown in Figure AIII.4, the values of the slope and intercept are 11.93(18) and 3,781(106), giving an Ea of 0.328(10) and Qan of 1.00(2). This is an example of how important weighting can be and how other data and their uncertainties may be used to improve the value from the data treatment.

APPENDIX IV

Tables of Evaluated Electron Affinities

TABLE A1.1		Atoms (in eV)
N	Atom	AEa	Uncertainty	Method	Reference	Year
1	H	0.754209	3.0E-06	calc	[9]	1962
2	He	0þ	—	—	this work	2003
3	Li	0.618069	4.4E-05	THD	[10]	1996
4	Be	0þ	—	—	this work	2003
5	B	0.279723	4.4E-05	THD	[11]	1998
6	C	1.262119	4.4E-05	THD	[12]	1998
7	N	0þ	—	—	this work	2003
8	O	1.461110	7.0E-08	THD	[13]	1999
9	F	3.401290	3.0E-06	THD	[14]	2001
10	Ne	0þ	—	—	this work	2003
11	Na	0.547930	2.5E-05	THD	[2]	1985
12	Mg	0þ	—	—	this work	2003
13	Al	0.432830	5.0E-05	THD	[15]	1998
14	Si	1.389521	2.0E-05	THD	[12]	1998
15	P	0.7464	4.0E-04	THD	[2]	1985
16	S	2.077103	3.0E-06	THD	[16]	1995
17	Cl	3.612740	3.0E-05	THD	[17]	1987
18	Ar	0þ	—	—	this work	2003
19	K	0.50147	1.2E-04	THD	[18]	2000
20	Ca	0.024546	8.7E-05	THD	[19]	1996
21	Sc	0.19	2.0E-02	PES	[20]	1981
22	Ti	0.08	1.0E-02	PES	[21]	1987
23	V	0.53	1.0E-02	PES	[22]	1998
24	Cr	0.676	1.2E-04	PES	[22]	1998
25	Mn	0þ	—	—	this work	2003
26	Fe	0.151	3.0E-03	PES	[23]	1986
27	Co	0.6633	6.1E-04	THD	[24]	1998
28	Ni	1.15716	1.3E-04	THD	[24]	1998
29	Cu	1.235792	4.4E-04	THD	[25]	1992
30	Zn	0þ	—	—	this work	2003

349

350	APPENDIX IV
TABLE A1.1		(Continued)
N	Atom	AEa	Uncertainty	Method	Reference	Year
31	Ga	0.41	4.0E-02	THD	[26]	1998
32	Ge	1.232712	1.5E-04	THD	[12]	1998
33	As	0.814	8.0E-03	PES	[27]	1998
34	Se	2.020682	4.4E-05	THD	[28]	1988
35	Br	3.363583	4.4E-05	THD	[29]	1989
36	Kr	0þ	—	—	this work	2003
37	Rb	0.485920	2.0E-05	THD	[30]	1978
38	Sr	0.05206	4.4E-05	THD	[31]	1997
39	Y	0.308	1.2E-02	PES	[20]	1981
40	Zr	0.427	1.4E-02	PES	[2]	1985
41	Nb	0.894	2.5E-02	PES	[2]	1985
42	Mo	0.7472	2.0E-04	PES	[22]	1998
43	Tc	0.55	1.5E-01	EST	[2]	1985
44	Ru	1.04638	2.0E-04	THD	[32]	1999
45	Rh	1.142890	2.0E-04	THD	[24]	1998
46	Pd	0.56214	1.2E-04	THD	[24]	1998
47	Ag	1.30447	2.0E-05	THD	[22]	1998
48	Cd	0þ	—	—	this work	2003
49	In	0.404	9.0E-03	THD	[33]	1998
50	Sn	1.112067	1.5E-04	THD	[12]	1998
51	Sb	1.474020	2.0E-05	THD	[34]	1997
52	Te	1.970876	7.0E-06	THD	[35]	1996
53	I	3.059000	1.0E-05	THD	[36]	1992
54	Xe	0þ	—	—	this work	2003
55	Cs	0.471640	6.0E-05	THD	[37]	1998
56	Ba	0.144620	6.0E-05	THD	[38]	1995
57	La	0.470	2.6E-02	THD	[39]	1998
58	Ce	0.955	2.6E-02	THD	[40]	2002
59	Pr	0.962	2.6E-02	THD	[41]	2002
60	Nd	0.050	—	EST	[4]	1997
61	Pm	0þ	—	EST	[4]	1997
62	Sm	0.05	—	EST	[4]	1997
63	Eu	0.05	—	EST	[4]	1997
64	Gd	0.10	—	EST	[4]	1997
65	Tb	0.10	—	EST	[4]	1997
66	Dy	0.15	—	EST	[4]	1997
67	Ho	0þ	—	EST	[4]	1997
68	Er	0þ	—	EST	[4]	1997
69	Tm	1.029	2.2E-02	THD	[42]	2002
70	Yb	0.01	—	EST	[4]	1997
71	Lu	0.34	—	THD	[43]	2001
72	Hf	0.10	—	EST	[4]	1997
73	Ta	0.323	1.2E-02	PES	[2]	1985
74	W	0.815	4.0E-03	PES	[44]	1992
75	Re	0.150	1.0E-01	SI	[45]	1970
76	Os	1.0778	1.5E-04	THD	[46]	2000

			TABLES OF EVALUATED ELECTRON AFFINITIES			351
TABLE A1.1		(Continued)
N	Atom	AEa	Uncertainty	Method	Reference	Year
77	Ir	1.5644	1.5E-04	THD	[47]	1999
78	Pt	2.12510	5.0E-05	THD	[47]	1999
79	Au	2.30863	3.0E-05	THD	[2]	1985
80	Hg	0þ	—	EST	this work	2003
81	Tl	0.377	1.3E-02	PD	[48]	2000
82	Pb	1.10	5.0E-02	PD	[49]	1973
83	Bi	0.942362	1.3E-05	PES	[50]	2001
84	Po	1.9	3.0E-01	EST	this work	2003
85	At	2.8	2.0E-01	EST	this work	2003
86	Rn	0þ	—	EST	this work	2003
87	Fr	0.460	—	EST	this work	2003
88	Ra	0.170	—	EST	this work	2003
89	Ac	0þ	—	EST	this work	2003
90	Th	0.05	—	EST	this work	2003
91	Pa	0.05	—	EST	this work	2003
92	U	0.05	—	EST	this work	2003
93	Np	0þ	—	EST	this work	2003
94	Pu	0.05	—	EST	this work	2003
TABLE A1.2 Main Group Homonuclear Diatomic Molecules (in eV)
AN	Mol	AEa	Uncertainty	Method	Reference	Year
3	Li2	0.509	0.009	PES	[51]	1994
5	B2	1.300	0.400	PES	[52]	1993
6	C2	3.269	0.006	M	[6]	2003
8	O2	1.070	0.100	M	this work	2003
9	F2	3.080	0.050	M	[6]	2003
11	Na2	0.430	0.015	PES	[53]	1989
13	Al2	1.460	0.060	PES	[54]	1998
14	Si2	2.200	0.010	PES	[55]	1993
15	P2	0.610	0.025	PES	[56]	1985
16	S2	1.690	0.015	M	[6]	2003
17	Cl2	2.450	0.020	M	Table 9.1	2003
19	K2	0.497	0.015	PES	[53]	1989
20	Ca2	0.025	—	EST	this work	2003
29	Cu2	0.840	0.010	PES	[57]	1990
31	Ga2	1.600	0.100	PES	[58]	1994
32	Ge2	2.074	0.001	PES	[59]	1995
33	As2	0.739	0.001	PES	[60]	1998
34	Se2	1.940	0.070	PES	[61]	1989
35	Br2	2.560	0.020	M	Table 9.1	2003
37	Rb2	0.498	0.015	LPD	[53]	1989
38	Sr2	0.052	—	EST	this work	2003
47	Ag2	1.100	0.008	PES	[57]	1990
49	In2	1.270	0.100	PES	[62]	1990

352	APPENDIX IV
TABLE A1.2		(Continued)
AN	Mol	AEa	Uncertainty	Method	Reference	Year
50	Sn2	1.965	0.010	PES	[63]	1999
51	Sb2	1.282	0.008	PES	[64]	1992
52	Te2	1.920	0.070	PES	[65]	1992
53	I2	2.524	0.005	PES	[66]	1997
55	Cs2	0.469	0.015	PES	[53]	1989
56	Ba2	0.145	—	EST	this work	2003
79	Au2	1.940	0.001	PES	[57]	1990
81	Tl2	0.950	0.100	PES	[62]	1990
82	Pb2	1.366	0.008	PES	[65]	1992
83	Bi2	1.271	0.008	PES	[67]	1991

The electron affinities of the Group II homonuclear diatomic molecules should be greater than the electron affinity of the atom.

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TABLES OF EVALUATED ELECTRON AFFINITIES

355

TABLE A2.1 CH Molecules by Value (in eV)

EVAL	NIST	Name/Formula	MW	Mtd.	Reference
0.07(2)	0.048	Benzene, 1,2,4,5-tetramethyl- (C10H14)	134	E	[2]
0.10(5)	—	Styrene (C8H8)	104	E	[2]
0.10(5)	0.108	Benzene, 1,2,3,5-tetramethyl- (C10H14)	134	E	[2]
0.12(5)	0.121	Benzene, hexamethyl- (C12H18)	162	E	[2]
0.13(5)	0.130	Biphenyl (C12H10)	154	E	[2]
0.14(5)	0.143	Naphthalene, 2-methyl- (C11H10)	142	E	[2]
0.16(2)	0.200	Naphthalene (C10H8)	128	E	[1]
0.16(5)	0.160	Naphthalene, 1-methyl- (C11H10)	142	E	[2]
0.16(5)	0.147	Naphthalene, 1-ethyl- (C12H12)	156	E	[2]
0.16(5)	0.160	Naphthalene, 2,6-dimethyl- (C12H12)	156	E	[2]
0.16(5)	0.156	Diphenylmethane (C13H12)	168	E	[2]
0.17(5)	0.173	Indene (C9H8)	116	E	[2]
0.17(5)	0.173	Naphthalene, 2,3-dimethyl- (C12H12)	156	E	[2]
0.18(5)	0.182	Benzene, pentamethyl- (C11H16)	148	E	[2]
0.19(5)	0.195	Naphthalene, 2-ethyl- (C12H12)	156	E	[2]
0.21(5)	0.247	Naphthalene, 1,4-dimethyl- (C12H12)	156	E	[2]
0.28(5)	0.278	Fluorene (C13H10)	166	E	[2]
0.29(2)	0.285	Triphenylene (C18H12)	228	E	[1]
0.30(2)	0.307	Phenanthrene (C14H10)	178	E	[1]
0.32(5)	0.321	Diphenylethyne (C14H10)	178	E	[2]
0.39(5)	0.390	(E)-stilbene (C14H12)	180	E	[2]
0.39(5)	0.390	Ethylene, 1,1-diphenyl- (C14H12)	180	E	[2]
0.40(5)	0.890	Biphenylene (C12H8)	152	CI	[3]
0.42(4)	0.397	Chrysene (C18H12)	228	E	[1]
0.54(3)	0.542	Picene (C22H14)	278	E	[1]
0.55(3)	0.534	Benzo[e]pyrene (C20H12)	252	E	[1]
0.58(1)	0.545	Benzo[c]phenanthrene (C18H12)	228	E	[1]
0.60(5)	0.550	Anthracene, 1-methyl- (C15H12)	192	CI	[3]
0.61(2)	0.500	Pyrene (C16H10)	202	E	[1]
0.67(3)	0.591	Dibenz[a,j]anthracene (C22H14)	278	E	[1]
0.68(2)	0.530	Anthracene (C14H10)	178	E, P, T	[1, 4, 5]
0.69(3)	0.595	Dibenz[a,h]anthracene (C22H14)	278	E	[1]
0.69(3)	—	Dibenz[a,c]anthracene (C22H14)	278	E	[1]
0.72(1)	0.390	Benz[a]anthracene (C18H12)	228	E	[1]
0.80(10)	0.550	1,3,5,7-Cyclooctatetrene (C8H8)	104	E, P, T	[1, 6–8]
0.80(5)	0.403	Acenaphthylene (C12H8)	152	E	[1]
0.80(5)	0.470	Coronene (C24H12)	300	P, CI	[9, 10]
0.82(4)	0.815	Benzo[a]pyrene (C20H12)	252	E, T	[1]
0.82(5)	0.630	Fluoranthene (C16H10)	202	E	[1]
0.84(5)	0.694	Azulene (C10H8)	128	E, P, T	[1, 11, 12]
0.89(5)	0.420	Benzo[ghi]perylene (C22H12)	276	CI	[9]
0.97(1)	0.973	Perylene (C20H12)	252	E, P, T	[1, 5, 13]
1.00(20)	1.000	Dibenzo[a,g]corannulene radical	350	CI	[9]
		(C28H14)
1.08(4)	1.067	Naphthacene (C18H12)	228	E, P, T	[1, 5, 14]
1.16(20)	1.160	Diindenochrysene radical (C26H12)	324	CI	[9]
1.39(5)	1.392	Pentacene (C22H14)	278	T	[5]

356	APPENDIX IV
TABLE A2.2 CH Molecules by Molecular Weight (in eV)
EVAL	NIST	Name/Formula	MW	Mtd.	Reference
0.10(5)	—	Styrene(C8H8)	104	E	[2]
0.80(10)	0.550	1,3,5,7-Cyclooctatetrene (C8H8)	104	E, P, T	[1, 6–8]
0.17(5)	0.173	Indene (C9H8)	116	E	[2]
0.16(2)	0.200	Naphthalene (C10H8)	128	E	[1]
0.84(5)	0.694	Azulene (C10H8)	128	E, P, T	[1, 11, 12]
0.07(2)	0.048	Benzene, 1,2,4,5-tetramethyl- (C10H14)	134	E	[2]
0.10(5)	0.108	Benzene, 1,2,3,5-tetramethyl- (C10H14)	134	E	[2]
0.14(5)	0.143	Naphthalene, 2-methyl- (C11H10)	142	E	[2]
0.16(5)	0.160	Naphthalene, 1-methyl- (C11H10)	142	E	[2]
0.18(5)	0.182	Benzene, pentamethyl- (C11H16)	148	E	[2]
0.40(5)	0.890	Biphenylene (C12H8)	152	CI	[3]
0.80(5)	0.403	Acenaphthylene (C12H8)	152	E	[1]
0.13(5)	0.130	Biphenyl (C12H10)	154	E	[2]
0.16(5)	0.147	Naphthalene, 1-ethyl- (C12H12)	156	E	[2]
0.16(5)	0.160	Naphthalene, 2,6-dimethyl- (C12H12)	156	E	[2]
0.17(5)	0.173	Naphthalene, 2,3-dimethyl- (C12H12)	156	E	[2]
0.19(5)	0.195	Naphthalene, 2-ethyl- (C12H12)	156	E	[2]
0.21(5)	0.247	Naphthalene, 1,4-dimethyl- (C12H12)	156	E	[2]
0.12(5)	0.121	Benzene, hexamethyl- (C12H18)	162	E	[2]
0.28(5)	0.278	Fluorene (C13H10)	166	E	[2]
0.16(5)	0.156	Diphenylmethane (C13H12)	168	E	[2]
0.30(2)	0.307	Phenanthrene (C14H10)	178	E	[1]
0.32(5)	0.321	Diphenylethyne (C14H10)	178	E	[2]
0.68(2)	0.530	Anthracene (C14H10)	178	E, P, T	[1, 4, 5]
0.39(5)	0.390	(E)-stilbene (C14H12)	180	E	[2]
0.39(5)	0.390	Ethylene, 1,1-diphenyl- (C14H12)	180	E	[2]
0.60(5)	0.550	Anthracene, 1-methyl- (C15H12)	192	CI	[3]
0.61(2)	0.500	Pyrene (C16H10)	202	E	[1]
0.82(5)	0.630	Fluoranthene (C16H10)	202	E	[1]
0.29(2)	0.285	Triphenylene (C18H12)	228	E	[1]
0.42(4)	0.397	Chrysene (C18H12)	228	E	[1]
0.58(1)	0.545	Benzo[c]phenanthrene (C18H12)	228	E	[1]
0.72(1)	0.390	Benz[a]anthracene (C18H12)	228	E	[1]
1.08(4)	1.067	Naphthacene (C18H12)	228	E, P, T	[1, 5, 14]
0.55(3)	0.534	Benzo[e]pyrene (C20H12)	252	E	[1]
0.82(4)	0.815	Benzo[a]pyrene (C20H12)	252	E, T	[1]
0.97(1)	0.973	Perylene (C20H12)	252	E, P, T	[1, 5, 13]
0.89(5)	0.420	Benzo[ghi]perylene (C22H12)	276	CI	[9]
0.54(3)	0.542	Picene (C22H14)	278	E	[1]
0.67(3)	0.591	Dibenz[a,j]anthracene (C22H14)	278	E	[1]
0.69(3)	0.595	Dibenz[a,h]anthracene (C22H14)	278	E	[1]
0.69(3)	—	Dibenz[a,c]anthracene (C22H14)	278	E	[1]
1.39(5)	1.392	Pentacene (C22H14)	278	T	[5]
0.80(5)	0.470	Coronene (C24H12)	300	P, CI	[9, 10]
1.00(20)	1.000	Dibenzo[a,g]corannulene (C28H14)	350	CI	[9]
1.16(20)	1.160	Diindenochrysene radical (C26H12)	324	CI	[9]