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New Pt … HN bonds characterized by 15N-filtered and 2D NOESY 1H NMR spectroscopy

✍ Scribed by Paul S. Pregosin; Heinz Rüegger; Franz Wombacher; Gerard Van Koten; David M. Grove; Ingrid C. M. Wehman-Ooyevaar

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
334 KB
Volume
30
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

New Pt …︁ HN bonding modes in two cycloplatinated complexes, [Pt(C~6~H~4~CH~2~NMe~2~‐2‐C,N)(C~6~H~4~CH~2~NMe~2~H‐2‐C,H)Br] (1) and [Pt(1‐C~10~H~6~NMe~2~‐8‐C,N)(1‐C~10~H~6~NMe~2~H‐8‐C,H)Br] (2), were characterized by ^15^N‐filtered and 2D NOESY ^1^H measurements. Both 1 and 2 show markedly different interactions of an RNMe~2~H^+^ group with a platinum centre; the ^1^J(^15^N,^1^H) values of 69 and 59 Hz for 1 and 2, respectively, are considerably less than those of the related free and protonated organic amine systems. The corresponding ^1^J(^195^Pt,^1^H) values are 72 and 180 Hz, respectively. An approach both to understanding and recognizing these Pt …︁ HN interactions is presented.

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