ChemDraw User's Manual - CambridgeSoft

• Critical messages that may affect the finalanalysisMessageDescriptionMessageThere are toomany bonds tothis unlabeledCarbon.DescriptionDisplayed for every unlabeledatom with more than 4 filledvalences. Filled valencesinclude sum of bond orders,charge, radicals, and free sites.Aromatic bonds count 1.5each, rounded down unless it isthe only bond to the atom.Charge is signed and includescharge implied by dativebonds. The Substituents queryproperty treats Free Sites, Upto and Exactly the same way:an atom with 2 explicit bondsand “Substituents: Up To 3” or“Substituents: Exactly 3” or“Substituents: Free Sites 1” hasthree filled valences.Parentheses don’tmatch.This label hasconflicting orunassignablecharges.Formula cannotbe computed forqueries.Displayed when parenthesescannot be matched into nestedopen-close pairs.Displayed when a plus andminus charge have beenassigned to the same element,charges have been assigned inmore than one way, or a chargehas been assigned to anickname, generic nickname,or Alternative Group name.Displayed for every label thatcontains a generic nickname,an element list or an alternativegroup. This is a status messageonly; analysis continues as ifthe problematic label were notselected.An atom in thislabel has aninvalid valence.ChemDraw can’tinterpret thislabel.Displayed in a variety of caseswhere ChemDraw cannot finda place to put a bond or cannotfind a bond to put on an atom.Valid valences for eachelement are listed in theIsotopes Table file.Displayed when ChemDrawfinds text that it cannot identifyas an element, nickname,generic nickname, oralternative group name.Text not inFormula stylewon’t beinterpreted.This namedalternative groupcontains noattachment point.Displayed for the first captionthat is not an atom label orAlternative Group name, andwhich contains any text not inFormula, Subscript, orSuperscript style. This is astatus message only, andappears only once regardless ofhow many captions are in theselection.Displayed for any structurewithin an Alternative GroupBox where the structure lacksan attachment point. This is astatus message only.ChemDraw 9 The Chemistry of ChemDraw • 239Chemical Conventions