To enquire about a job I turned down?

[HoundOfTheBasketballs]

I was offered two jobs on the same day six months ago. I took one and politely turned the other one down.
The job I took isn't working out how I'd hoped. Would I be unreasonable to make an enquiry with the hiring manager of the job I turned down. I don't imagine it's still available, but they might have something similar, or maybe the person they gave it to in the end isn't working out. I don't know.
Is it too cheeky?

No, it can't hurt. YANBU.

It's a fact that if you don't ask you don't get. No harm at all making a polite, professional approach to see how things are going. The very worst that could happen is him/her telling you that the person now in the post is doing a great job and very happy. And you never know, he/she might ask you to come on for a chat. Good luck.

Nothing ventured, nothing gained I guess. Thanks. I'm going to email him on Monday.

Good luck OP - you have nothing to lose.

Does anyone have any idea how I should word this email?
I'm normally quite articulate!

Dear xxxxx,
I hope this email finds you well.
I am aware that quite some time has passed since you offered me the position of xxxxxx. However for various reasons my current employment is not working out as expected and I wanted to enquire as to whether there are any current vacancies similar to that which you offered me previously.
I look forward to hearing from you.
Warm regards,
Hound

Is this okay, do you think? Do I need to add anything else?

I wouldn't say it's not working out. That sounds like it might be that you're not very good at it or have done something wrong!

I would probably say something like - it isn't providing me with the professional experience I was expecting or something.

Good luck.

That doesn't sound right either actually... I can't find the words but you need it to sound like it isn't furthering your career enough, providing you with the next step onwards you were hoping for or something.

I would just keep it to asking if they've had any luck finding an appropriate replacement. They can join the dots that you're not happy where you are and are looking again...no need to spell it out

Thanks wild. I knew there wasn't something quite right with it!
What I really want to say is "bloody hell, I made a massive goof and took a job which has turned out to be a total bag of shit. I'm so sorry, please give me a chance to accept your job offer again."
But i know that definitely doesn't sounds right!

I would say.
I successfully interviewed for a role with you six months ago and was not in a position to take up your offer at that stage. Would it be possible to have a chat about any current roles available?

Keep it short and to the point:

Dear xxxxx,

Some time has passed since I was offered the position of xxxxxx.

I was very impressed with your company and would very much like to be part of your organisation.

May I enquire if you have any current vacancies available, and if not, ask that you keep my details for future reference.

I enclose my current contact details and CV.

kind regards,
Hound

I like that green folder. Direct, polite and no indication that my choice was poor judgement!

KathArtic's email looks good