Gdddk

I am trying to add a TOC entry with text and a figure to an ACS paper draft.
I would like to have everything fit in a box of width=3.25in and height=1.75in, with the figure on the right and the text on the left, everything being centered vertically.
How can I achieve this?

This is my current minimum working example illustrating the problem:

documentclass[journal=apchd5,manuscript=letter]achemso
titleTitle

begindocument

% required max size
includegraphics[width=3.25in, height=1.75in]example-image-a

% what I think mimics the ACS tocentry environment
begincenter
 fbox
 beginminipage3.25in
 vbox to 1.75in
 parbox[c]0.5textwidthLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Arcu non odio euismod lacinia at quis risus sed vulputate.includegraphics[width=0.5textwidth]example-image-a
 
 endminipage
 
endcenter

% ACS tocentry environment
begintocentry
 parbox[c]0.5textwidthLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Arcu non odio euismod lacinia at quis risus sed vulputate.includegraphics[width=0.5textwidth]example-image-a
endtocentry

enddocument

I cannot get the text and figure centered vertically.
In addition, the frame ends up being heigher than height=1.75in.

How can I center a text and figure vertically in a framed box of fixed size?
How can I do it within the tocentry environment from the achemso package?

Here is an alternate version called alttocentry that will keep the box size correct, unless the text becomes too much for the space. In the first instance, I show rules to the right and below to confirm the dimensions.

Adjustable parameters include fboxsep, fboxrule, mygap, imgwd, boxwd, and boxht.

documentclass[journal=apchd5,manuscript=letter]achemso
usepackagestackengine
newlengthmygap
setlengthmygap5pt
newlengthboxwd
setlengthboxwd3.25in
newlengthboxht
setlengthboxht1.75in
newlengthimgwd
setlengthimgwd.5boxwd
newcommandmytextwdboxwd-imgwd-fboxsep-fboxrule-mygap
newcommandmytextenvsetstretch1.1sffamily
newcommandmyboxshift-.5dimexprheight-.5htstrutbox+.5dpstrutboxrelax
newcommandmyboxoptswidth=imgwd-fboxsep-fboxrule
newcommandmyaddgap.5boxht-.5ht0-.5dp0-fboxsep-fboxrule
newenvironmentalttocentry[1]
 defmyimgname#1%
 setbox0=hboxbgroupbeginminipagemytextwdmytextenvstrutignorespaces
%
 endminipage%
 kernmygap%
 raiseboxmyboxshift%
 expandafterincludegraphicsexpandafter[myboxopts]myimgname%
 egroup%
 centerlinefboxaddstackgap[myaddgap]copy0%
 showboxht%%%%% CAN GET RID OF THIS
 %

%%%%% CAN GET RID OF THESE, ONCE HAPPY WITH RESULT
newcommandshowboxht%
 rlap,rule[-.5boxht+.35htstrutbox-.35dpstrutbox]3ptboxht
newcommandshowboxwdparcenterlinerule3.25in3pt
%%%%%%%%%
titleTitle
begindocument
beginalttocentryexample-image-a
 Lorem ipsum dolor sit amet, 
 consectetur adipiscing elit, 
 sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.%
endalttocentry
showboxwd%%%%% CAN GET RID OF THIS
bigskip

letshowboxhtrelax
setlengthimgwd.45boxwd

beginalttocentryexample-image-b
This is a test of an toc entry smaller than the figure.
textbackslash imgwd reduced.
endalttocentry
beginalttocentryexample-image-b
This is a test of an toc entry larger than allowed vertical space.
This is a test of an toc entry larger than allowed vertical space.
This is a test of an toc entry larger than allowed vertical space.
This is a test of an toc entry larger than allowed vertical space.
endalttocentry
enddocument

I'm not sure that the actual tocentry environment preserves the vertical dimension. But here is my attempt using the actual environment.

documentclass[journal=apchd5,manuscript=letter]achemso
titleTitle
begindocument
% ACS tocentry environment
begintocentry
vfill
 beginminipage0.5textwidthLorem ipsum dolor sit amet, consectetur adipiscing elit, 
 sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. endminipage%
 raisebox-.5dimexprheight-htstrutbox+dpstrutboxrelax%
 includegraphics[width=0.5textwidth]example-image-a
\vfill
endtocentry
enddocument