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Re: [Fwd: Z']

  • To: corecifchem@iucr.org
  • Subject: Re: [Fwd: Z']
  • From: spea@chem.uu.nl (a.l.spek)
  • Date: Thu, 4 Aug 2005 13:24:24 +0200 (CEST)
  • In-Reply-To: <42F1C3E6.603@flack.ch> from "Howard Flack" at Aug 4,5 09:29:42 am
Howard,
	I guess that nature is too complicated in this respect tot
cover 100%.

Ton

See you in Florence

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> FYI to prove people are still interested in Z'
>      H.
> 
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> From: "=?iso-8859-1?q?M=E1ty=E1s_Czugler?= Dr." <czugler@chemres.hu>
> Subject: Z'
> To: Howard Flack <Howard.Flack@cryst.unige.ch>
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> Dear Howard,
> a good time has elapsed as we last talked to each other. Maybe this Florence 
> meeting will give another chance. 
> But now I am after a handy Z' definition ... as I am dwelling on this subject 
> and can no longer find a very plausible defintion once I had at adebate on a 
> CCDC page.
> I am a sort of lazy thus I looked up the IUCr webpages and found some 
> correspondence of you with David Drown. No further information as to what 
> became of these exchanges between you and David.
> 
> My questions then:
> Did  DMG has finally settled a definition for Z'?
> Have you ever considered introducing a Z'' term? (as put forward some two 
> years ago by Jon Steed) 
> 
> With best wishes,
> Matyas
> 
> 
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> Date: Thu, 04 Aug 2005 09:26:38 +0200
> From: Howard Flack <crystal@flack.ch>
> Subject: Re: Z'
> In-reply-to: <200508021717.59627.czugler@chemres.hu>
> To: czugler@chemres.hu
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> References: <200508021717.59627.czugler@chemres.hu>
> 
> Matyas,
> 
>    The discussions within a small group of people working to include 
> chemical (i.e. molecular) information inside a CIF turned out to be far 
> more difficult than one could have imagined. Z' is part of that effort. 
> Some of the problems were chemical or crystal-chemical and some are 
> syntactical. So there is still no decent official definition available.
> 
> See you in Firenzi,
>    H.
> 
> 
> 
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