Table 2.

Monoisotopic mass spectrum of B₅H₉P₅(CH₃)₉

m/e	Ion	50 volts	20 volts	15 volts
41	B(CH3)2	21.7	0.05	0.05
61	P(CH3)2	4.6	.45	.25
75	BH3P(CH3)2	17.5	…………..	…………..
89	BHP2(CH3)	14	…………..	…………..
(a)	(a)	(a)	(a)	(a)
261	B4H3P4(CH3)6	4.9	4.4	…………..
262	B4H4P4(CH3)6	5.1	5.4	1.95
263	B4H5P4(CH3)6	12.4	14.4	4.15
264	B4H6P4(CH3)6	1.45	1.21	0
265	B4H7P4(CH3)6	3.0	3.2	1.05
273	B4P4(CH3)7	5.15	8.0	1.10
274	B4HP4(CH3)7	1.90	1.53	0.55
275	B4H2P4(CH3)7	9.25	9.10	3.0
276	B4H3P4(CH3)7	4.75	4.82	1.65
277	B4H4P4(CH3)7	14.3	14.9	5.75
278	B4H5P4(CH3)7	5.90	5.85	3.6
279	B4H6P4(CH3)7	7.60	7.90	4.25
287	B5H3P4(CH3)7	6.25	5.90	2.0
288	B5H4P4(CH3)7	0.95	0.85	0
289	B5H5P4(CH3)7	19.9	20.0	11.9
290	B5H6P4(CH3)7	3.9	4.0	2.15
291	B5H7P4(CH3)7	9.2	11.0	7.5
292	B5H8P4(CH3)7	4.1	3.56	3.9
293	B5H9P4(CH3)7	5.5	7.1	5.25
322	B4H3P5(CH3)8	1.76	1.35	…………..
323	B4H4P5(CH3)8	2.54	2.07	2.3
324	B4H5P5(CH3)8	36.6	35.1	39.0
325	B4H6P5(CH3)8	19.0	16.2	18.0
326	B4H7P5(CH3)8	7.7	8.5	9.4
327	B4H8P5(CH3)8	2.62	1.67	1.85
334	B4P5(CH3)9	1.08	1.13	0.90
335	B4HP5(CH3)9	4.90	4.50	2.45
336	B4H2P5(CH3)9	3.30	2.43	2.20
337	B4H3P5(CH3)9	3.84	3.96	4.40
338	B4H4P5(CH3)9	19.4	19.4	19.5
340	B4H6P5(CH3)9	100	100	100
347	B5H2P5(CH3)9	2.72	2.34	1.70
348	B5H3P5(CH3)9	2.48	0.95	2.15
349	B5H4P5(CH3)9	4.15	2.48	1.50
350	B5H5P5(CH3)9	17.9	16.6	20.5
351	B5H6P5(CH3)9	4.1	1.80	3.35
352	B5H7P5(CH3)9	87.	84.1	105
353	B5H8P5(CH3)9	3.84	2.48	3.05
354	B5H9P5(CH3)9	26.4	18.0	13.9

^aMass range 90 to 260 omitted. Ions have not been identified.