Element Not-Lists

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The element not-list specifies that the elements in the list match must not match in the structure for which you are searching. Commas must separate the elements in the element not-list. A space after each comma and brackets are optional.

The word NOT must be in all-caps and must be followed by a space. Alternatively, the word NOT may be replaced with a minus sign.

For example:

NOT[F,Cl,Br,I] [NOT C,O,N]

NOTE: An element not-list may contain only atomic elements, plus D (deuterium) and T (tritium).

To create an element not-list:

1. Open an atom label text box.

2. Type an open bracket, the word NOT, and a space ("[NOT") followed by a list of elements separated by commas ("Cl, Br, I"), followed by a close bracket ("]").