Fu Chun Yu Lab Notebooks

Dec. 9 1949 Observations of the resonance of N14 were made with the following chemical compounds: K3 Fe(CN)6 , K4Fe(CN)6, K3 Co(CN)6. The results were N14 - resonance Compounds occures at same place K3Fe(CN)6 Fe has no 213 uB signal yes K4Fe(CN)6 yes K3Co(CN)6 This indicates that not only the complex K4Fe(CN)6 K3Co(CN)6 are diamagnetic, the Fe [illegible] Co in the compounds are themselves diamagnetic

a35/a37 = 1.202723 ~ 9400 grams Cl35 (3920->3910) Time Dist. bet Marker Resonance [illegible] v [illegible]v2 Marker Dist. freq 22 min 113.5 mm (15 KC) #2 102.5 mm 3911.3 KC +0.15 0.0225 72 76.0 #1 68.0mm 3911.2 0.05 0.0025 109 68.5 #2 60.0 3911.1 -0.05 0.0025 146 68.3 #2 60.5mm 3911.0 -0.15 0.0225 mean=3911.15 3 0.0500 .0.170 v(cl35)=(3911.125+-0.13)KC =3911.15(1+-3x10 5) v(cl35)/v(cl37)=1.20138(1+-8x10-5) =1.20138+-0.00008 935/937=1.202723 Cl37(3260->3250) Time Dist bet Marker Marker Resonauce Dist Resonauce beg [?][?] 29min 75.0mm #2 30.0mm 3255.9KC +0.35 0.1225 84 75.4" #2 31.5 3255.7 +0.15 0.0225 121 79.0" #2 35.0 3255.5 -0.05 0.0025 159 78.5" #2 35.0 3255.5 -0.05 0.0025 mean=3255.55 3 0.1500 0.0500 v(cl37)=(3255.55+-0.22)KC =3255.55(1+-7x10-5) 1.2013791 0.684380

Dec 19, '49 Sample HCl #1 Cl35 Time=? #2 D2 3:40PM 4.56MC +5500 C 7.15MC+2360C 5450 2280 5450 2240 5450 2210 5450 2250 4.56546 MC 7.1523MC #3 Cl35 3:50 PM #4 D2 3:57 PM 4.56MC +4800 C 7.15MC +1330 4700 1230 4700 1280 4650 1220 4.5647 MC 7.1513 MC #5 Cl35 4:03 PM 4.56 MC+4300C at 3:50PM v(cl35)=4.5647 4300 v(D2)=7.1517 4300 4300 4.5643MC v(Cl35)/v(D2)=4.5647/7.1517=0.6382678 v(Cl35)/v(Na23)=4.5647/7.1517x[?]/0.26450+-0.01% 0.37043 Bitter's value=0.37051+-0.03% 0.37051+-0.00012

4^Be

1s² 2_eff = 4 - 0.35 = 3.65

2s² 2_eff = 4 - 1.70 - 0.35 = 1.95

Total Z_eff = 3.65 + 1/4 × 1.95 = 3.65 + 0.49 = 4.14

Jan. 19, 1950 v(Na23) v(K3Co(CN)6) v(Na3Co(NO2)6) (1.10654) 6099.65 KC 5471.86 KC 5512.34 KC (1.11473) 8868.44KC 7955.16 8014.66(1.10653) (1.11480) FS 8019.54(1.10585) 7511.54KC 6737.46 6787.50 (1.10667) (1.11489) FS 6791.61 (1.10600) 4961.50KC 4450.63 4483.55(1.10660) (1.11479) FS 4485.82(1.10604) Ho v(Na23)/v(K3Co(CN06) v(Na23)/v(Na3Co(no2)6) 5416.2 gauss 1.1147 1.1065 not measured 7874.8 1.1148 1.1065 1.1059 6669.9 1.1149 1.1067 1.1060 4405.6 1.1148 1.1066 1.1060

The function at its poles inside the unit circle around the origin.

The zeros of are the zeros of the two equations

If the zeros of (1) are z₁ & z₂, the zeros of (2) are the complex conjugates . If z₁ lies inside the unit circle, so does . Therefore z₁ & are the only two [principle?] poles inside the circle. Thus

The residue of f(z) at

The residue of f(z) at

Jan. 30, 1950 Bi209 (7010-7000KC) Time Distance bet Markers Marker Resonance distance Resonance frequency 4 min 13.0 mm #1 8.0 mm 7004.0KC 20 13.0 " 8.5 7003.6 30 13.0 " 8.5 7003.6 42 13.0" 8.5 7003.6 v(Bi209)=7003.6KC D2(6700->6690KC) Time Distance bet Markers Markers Resonance Distance Resonance Frequency 15 min 12.5 mm #1 11.5 mm 6690.9KC 26 12.5 " 12.0 6690.5 36 12.5 " 12.0 6690.5 50 12.0 " 11.5 6690.5 v(D2)=6690.5 KC v(Bi209)/v(D2)=7003.6/6690.5=1.04680(1+-2x10-5) u(Bi29)=9/2x0.857632x1.04680=4.03996

Feb. 13, '50

N¹⁴ occurs at 3.34 MC at H₀ = 10600 G in K₃Co(CN)₆. Search for N¹⁴ in Na₃Co(NO₂)₆ in freq range 3.445 MC - 3.26 MC is negative

As to the structure of NaSbF₆ refer to Nils Schrewelius, Röntgenuntersuchung der Verbindungen NaSb(OH)₆, NaSbF₆, NaSbO₃ und gleichartiger Stoffe. Zeitschrift für anorganische und allgemeine Chemie Bd 238, 248 (1938)

NaSbF₆ is cubic a = 8.18 Å The structure is probably the space group 4 Na in 4(b) , 4 Sb in 4(a), 24 F in 24(d) ; x = -0.05, y = -0.05 , z = 0.225

within the SbF₆^- octahedron 2.67, 2.78 and from octahedron [?] octahedron 2.72 Å

Q (In¹¹³) = 1.144 × 10^-24 cm²

Q (In¹¹⁵) = 1.161 × 10^-24 cm²

HSbCl₆ was prepared by treating chemically pure SbCl₅ with 10% (~3 N) hydrochloric acid, both of the reagents were precooled to the temp of ice water. [left margin]a fuming liquid[/margin]

HSbCl₆ is unstable at room temperatures Signal amplitude was reduced to about 20% after standing for 24 hours.

Suggestion: mean life time of the compound can be measured with the spectrometer.