The current on moving the tip in 0.10 nm steps from 0.40 nm to 1.50 nm should be calculated. Concept introduction: The magnitude of the tunneling current I t is given by, I t = V e − c d V − bias voltage C −constant d − distance between the probe and the surface

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Part VII. Below are the 'HNMR, 13 C-NMR, COSY 2D- NMR, and HSQC 2D-NMR (similar with HETCOR but axes are reversed) spectra of an organic compound with molecular formula C6H1003 - Assign chemical shift values to the H and c atoms of the compound. Find the structure. Show complete solutions. Predicted 1H NMR Spectrum 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 f1 (ppm) Predicted 13C NMR Spectrum 100 f1 (ppm) 30 220 210 200 190 180 170 160 150 140 130 120 110 90 80 70 -26 60 50 40 46 30 20 115 10 1.0 0.9 0.8 0 -10

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Question

Chapter 21, Problem 21.13QAP

Interpretation Introduction

Interpretation:

The current on moving the tip in 0.10 nm steps from 0.40 nm to 1.50 nm should be calculated.

Concept introduction:

The magnitude of the tunneling current I_t is given by,

It=Ve−cd

V − bias voltage

C −constant

d − distance between the probe and the surface

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