US PATENT SUBCLASS 987 / 175
.~.~.~ Contains the structure (X=C*)-P(=X) (C) (X-C) or cyano*)-P-(=X)(C)(X-C) where * indicates a direct bond of the C of the C=X group or the C atom of the cyano group to the P atom (9/32A9; 9/32A9+Q)

Current as of: June, 1999
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987 /   HD   ORGANIC COMPOUNDS CONTAINING A Bi, Sb, As, OR P ATOM OR CONTAINING A METAL ATOM OF THE 6TH TO 8TH GROUP OF THE PERIODIC SYSTEM

30  DF  PHOSPHORUS COMPOUNDS (9/02; 9/06) {15}
116  DF  .~ Contains at least one (C)-P bond (9/28) {19}
171  DF  .~.~ Pentavalent P having the structure (C)2-P(=X) (X-C) where X is chalcogen (9/32) {9}
175.~.~.~ Contains the structure (X=C*)-P(=X) (C) (X-C) or cyano*)-P-(=X)(C)(X-C) where * indicates a direct bond of the C of the C=X group or the C atom of the cyano group to the P atom (9/32A9; 9/32A9+Q)

DEFINITION

Classification: 987/175

Contains the structure (X=C*)-P(=X)(C)(X-C) or (cyano*)-P-(=X)(C)(X-C) where * indicates a direct bond of the C of the C=X group or of the C atom of the cyano group to the P atom (9/32A9; 9/32A9+Q):

(under subclass 171) Subject matter wherein the P compound contains the structure (X=C) -P(=X) (C)(X-C) or (N#C) -P(=X) (C)(X-C) where X is a chalcogen atom and N#C indicates a triple bond between the N and C atoms.