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ramsfan

not that, not teratogenic and not l-thalidomide

**Posted:** Wed Dec 28, 2005 4:02 pm

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nichtwahr · Boot Joined: 10 May 2005 Posts: 15

Perhaps it's a cryptic-crossword-style pun: start with "l-thalidomide", subtract "lethal", and end up with the 'difference' -- in this case, 'idomid'.
(I'd try it myself, but I don't have any cards.)

**Posted:** Thu Dec 29, 2005 10:59 am

corylus · Kilroy Joined: 28 Dec 2005 Posts: 2

There are various other systematic names for it, but I suspect it's either a more obscure chemical or something more cryptic still.

Incidentally, someone else said that the crystal must be inorganic, but I don't think that's the case.

**Posted:** Thu Dec 29, 2005 1:40 pm

Mikeyj

**Posted:** Fri Dec 30, 2005 1:53 pm

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KashB · Boot Joined: 13 Dec 2005 Posts: 13 Location: london

Hmmmm

**Posted:** Sat Dec 31, 2005 7:10 am

The First Speaker · Boot Joined: 18 May 2005 Posts: 55 Location: UK

Its not 'crossword', just tried it Sad

**Posted:** Sat Dec 31, 2005 9:33 am

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"If I were to awaken after having slept for a thousand years, my first question would be: Has Perplex City card #238 been solved?"

step

apparently nobody paid attention to my post back on page 10 so I attempted to try it myself Smile

I managed to find 8 atoms of the unit cell. There is most likely 1 or 2 more. One of the problems is that it is very difficult to see some of the peaks on the images posted in this thread.

The following image is what I have so far... it is color coded to show which peaks/atoms are grouped together. I have located 8 atoms, so there are 8 groupings of peaks (each group has the same shape because that is how a patterson map works). The lines connecting the peaks were arbitrarily chosen and do not represent any sort of chemical structure - they are ONLY to help visualize/clarify which peaks are grouped together - but the relative positions of the peaks within a group directly correlate with the positions of the atoms in a unit cell. I added two peaks at -3 0 12 and symmetrically at 3 0 -12 to account for peaks that were not apparent in the images but were implied from the structure. Also, all peaks not yet accounted for are in grey.

**Posted:** Sat Dec 31, 2005 1:13 pm

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jbjbaby · Greenhorn Joined: 01 Jan 2006 Posts: 4

Hi I've just starting with this (been on it solid for 2 days now); I thought I had it yesterday with:

**Posted:** Sun Jan 01, 2006 8:19 am

Danives · Boot Joined: 28 Dec 2005 Posts: 47

Is it just me...or does the image look a little bit like

**Posted:** Sun Jan 01, 2006 5:53 pm

theonlygolux · Kilroy Joined: 01 Jan 2006 Posts: 1 Location: London

Just a thought

**Posted:** Sun Jan 01, 2006 5:59 pm

ramsfan

Not sulfur, gunpowder or prion (just a silly guess)

**Posted:** Sun Jan 01, 2006 8:57 pm

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hturan · Greenhorn Joined: 02 Jan 2006 Posts: 9

Woohoo!! Iv'e got a confirmed solve!!

If only we had looked more closely at the link that The First Speaker had given us at the start, we would've saved all this trouble
Embarassed

Anyways, for all those wondering, the answer is:

**Posted:** Mon Jan 02, 2006 11:46 am

ALISDAIRPARK

Yup I can confirm that's a solve. Well done hturan (and First Speaker I guess?)

**Posted:** Mon Jan 02, 2006 12:00 pm

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angelsk · Boot Joined: 21 Dec 2005 Posts: 67 Location: London, UK

**Posted:** Mon Jan 02, 2006 12:32 pm

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Lord Dawn · Greenhorn Joined: 18 Dec 2005 Posts: 4 Location: Scotland

Argh! I couldn't have been further from the answer - put's on dunce hat and sits in corner

**Posted:** Mon Jan 02, 2006 12:40 pm