Freeze Panes

Freeze Panes can be used to create a similar split document window, but the upper or left part of the window is fixed and cannot be scrolled. Split panes are useful to display fixed row or column headings (or both) while scrolling through the rest of the worksheet. 

To use the Freeze Panes feature to split a document window horizontally into two windows, select an entire row as if you were going to insert a row. Then choose Freeze Panes from the Window menu. To split the window both horizontally and vertically, select the cell whose upper left comer defines the location of the split, then choose Freeze Panes. 

Figure A.4. Window/Freeze Panes, after scrolling down.

A dynamic NMR analysis revealed that the naphthalene rings of pentathiepinoacenaphtho[l,2-tf]acenaphthylene 7 (see Section 13.17.7.12) are chemically nonequivalent up to 100 °C due to freezing of the inversion of the pentathie-pane ring. Thus, sulfuration of 5-phenylacenaphtho[l,2- ]acenaphthylene gave a pair of conformers 8 and 9 which were isolable and whose stereochemistry was determined by X-ray diffraction analysis. These conformers isomerized... 

The exclusively stereospecific and sterically sensitive ring expansion of isomeric vinylcyclopro-panes 21 to cyclopentenes 22 was detected in the desilylation of 21 with freeze-dried potassium fluoride. ... 

Low-carbon nitroalkanes have similar physical properties as nitromethane, but they are comparatively more difficult to detonate, exhibiting inferior detonation properties, therefore, they are mainly used in liquid explosive mixtures to lower the freezing point of nitromethane. Table 7.1 listed the physical properties of four low-carbon nitroalkanes including nitromethane (NM), nitroethane (NE), o-nitropro-pane, and nitropropane. 

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