The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 1997
Filed:
Jul. 20, 1995
Ella Y Fung, St. Louis, MO (US);
Stephen R Cooper, St. Louis, MO (US);
Other;
Abstract
The present invention provides new tri-tungsten compounds of the general structure: ##STR1## wherein R.sup.1 is --C.sub.k H.sub.1 Z.sub.m or --(C.sub.k H.sub.1 Z.sub.n) (C.sub.6 H.sub.(5-q) Z.sub.q).sub.p ; R.sup.2 is --C.sub.k H.sub.1 Z.sub.m or --(C.sub.k H.sub.1 Z.sub.n) (C.sub.6 H.sub.(5-q) Z.sub.q).sub.p ; R.sup.3 is --C.sub.k H.sub.1 Z.sub.m or --(C.sub.k H.sub.1 Z.sub.n) (C.sub.6 H.sub.(5-q) Z.sub.q).sub.p ; R.sup.4 is --(C.sub.k H.sub.1 Z.sub.m) or --(C.sub.k H.sub.1 Z.sub.n) (C.sub.6 H.sub.(5-q) Z.sub.q).sub.p ; R.sup.5 is --C.sub.k H.sub.1 Z.sub.m or --(C.sub.k H.sub.1 Z.sub.n) (C.sub.6 H.sub.(5-q) Z.sub.q).sub.p ; R.sup.6 is --C.sub.k H.sub.1 Z.sub.m or --(C.sub.k H.sub.1 Z.sub.n) (C.sub.6 H.sub.(5-q) Z.sub.q).sub.p ; Z is a functional group attachable on aliphatic chains or aromatic rings; R.sup.7 is an anionic molecule, neutral molecule, --C.sub.k H.sub.1 Z.sub.m or --(C.sub.k H.sub.1 Z.sub.n) (C.sub.6 H.sub.(5-q) Z.sub.q).sub.p ; R.sup.8 is an anionic molecule, neutral molecule, --C.sub.k H.sub.1 Z.sub.m or --(C.sub.k H.sub.1 Z.sub.n) (C.sub.6 H.sub.(5-q) Z.sub.q).sub.p ; R.sup.9 is an anionic molecule, neutral molecule, --C.sub.k H.sub.1 Z.sub.m or --(C.sub.k H.sub.1 Z.sub.n) (C.sub.6 H.sub.(5-q) Z.sub.q).sub.p ; k is about 0-20; l is about 0-50; m is about 1-50; n is about 0-50; p is about 1-10; q is about 1-5; M is a counter positive or negative ion; and a is about -6-+6. W in the structure is the generally accepted one letter symbol for tungsten. Methods of imaging using compounds of the invention and processes for producing compounds of the invention are also disclosed.