Fu Chun Yu Lab Notebooks

March 31, 50

By replacing Co in K₃[Co(C₂O₄)₃] with Al & comparing the Al-resonances from K₃[Al(C₂O₄)₃] & Al₂(SO₄)₃, no appreciable shift can be found.

April 3, 1950

No structure of Sb¹²¹-resonance can be found from a freshly prepared aqueous solⁿ of HSbCl₆.

Atomic wt of nitrogen in 31.4% enriched N¹⁵ = 14.00751 × 0.686 + 15.00489 × 0.314 = 14.321

Gauss of HNO₃ solⁿ = 12.9 containing 10.57% nitric acid by wt.

Gauss of HNO₃ = 0.1057 × 12.9 = 1.3635

Moles of HNO₃ = 1.3635/63.329 = 0.02153

Molecular wt of NaNO₃ = 85.32

Wt. of NaNo₃ = 85.32 × 0.02153 = 18.34 1.834 grams

Solⁿ of NaNO₃ = 3.5 c.c.

Molar of solⁿ =

in NaNo₃ = 1.04274 1.40274 ± 0.000057

in NH₃ {{tex: $\frac{\gamma(N^{15})}{\gamma(N^{14})}$ :tex}}= 1.04261 1.40261 ± 0.00006 ± 0.00008

Mo^(I) (3130 --> 3120 KC)

6/7/50

The width of the two resonance lines of Co⁵⁹ in Na₃[Co(NO₂)₆] was measured by recording the derivative of the v-mode at very small H_m ~ 0.1 G. Double H_m will give double amplitude.

Measured width = 0.72 G

Amp Ratio of the two line = 16 (low freq / high freq)

[Break]

Width of SbCl₆^- = 0.96 G [Width of] SbCl₅ = 8.68 G

at H₀ = 6673 G

2p = r v(r) --> potential at radius r

= v(r) + r v′(r)

2.79246 (1 ± 1/30000)

[21-?] (1 ± 1/5000)

June 30, 1949

(a|N|b)